Low Water Use Drought Tolerant Plant List - Tucson, Arizona

Low Water Use
Drought Tolerant Plant List
Official Regulatory List for the Arizona Department
Official Regulatory List for the Arizona Department
of Water Resources, Tucson Active Management Area
of Water Resources, Tucson Active Management Area

400 W. Congress, Suite 518 (520) 770-3800
Tucson, AZ 85701 www.azwater.gov
Photo - Christina Bickelmann 2004

D ROP YOUR WATER USE !
Tucson is Educating Consumers to Drop their Water Use . . .
The Tucson office of the Arizona Department of Water Resources (ADWR) has developed a new
pilot program, Drop Your Water Use, to educate retail nursery customers on how to plan and
maintain a healthy and water efficient landscape.

The program is a voluntary collaboration between ADWR and local nurseries that uses a simple
water drop system to identify plants with similar water requirements. Plants are labeled one
through three, distinguished with corresponding water drops and numbers.

All of the labeled plants are Xeriscape plants currently on the Tucson AMA -Low Water Use/
Drought Tolerant plant list. The one through three numbering system correlates with the plant list.

A “number one” indicates very low water use
mostly native Sonoran and Chihuahuan desert plants,

Two is low water use,

Three is moderate water use.
By choosing plants with the same number a gardener can more successfully group plants by
water needs.

Although the plants are all low-water-using, the frequency that they need to be irrigated varies
from approximately once a week to once a month after the plants are established (in about 2-3
years). ADWR hopes that consumers will use separate valves on their irrigation system to water
each zone and irrigate trees separately, enabling them to manage their irrigation water use more
efficiently.

To date, fourteen Tucson retail nurseries and all six Tucson area Home Depot’s have signed up for
the program. ADWR is working with other nurseries to encourage them to participate. Wholesale
nurseries in Phoenix and Tucson are also participating in the program by adding water drop
symbols to the labels on plants to be sold in Tucson.

Retail nurseries that participate receive free posters, water drop stickers for their signage and
handouts for their customers explaining the program and watering guidelines. In addition all
participating nurseries will be listed on the ADWR website and will be promoted in press releases
and at community events.

Anyone interested in more information or Tucson nurseries that would like to sign up for the
program should contact Christina Bickelmann, Water Conservation Specialist for the Tucson
ADWR office @ (520) 770-3816 or email: clbickelmann@azwater.gov

LOW WATER USE/DROUGHT TOLERANT PLANT LIST
OFFICIAL REGULATORY LIST FOR:

Arizona Department of Water Resources - Tucson Active Management Area
Pima County, City of Tucson, Town of Oro Valley, Town of Marana

This official regulatory list was developed to guide the regulated community in choosing low
water-use and drought tolerant plants for landscaping. Landscaping planted after January 1,
1987 within publicly owned rights-of-way and irrigated with groundwater may be planted only
with plants listed on the ADWR Low Water Use/ Drought Tolerant Plant List for the Tucson
AMA. The director may waive this requirement under special circumstances. This requirement
does not apply to any portion of a residential lot that extends into a publicly owned right-of-way.
Many local jurisdictions have adopted this list for regulatory purposes; contact your local
jurisdiction for their landscape requirements.

This list can also be used as a resource for residents and businesses that are interested in
conserving water. The list provides a wide array of plants to accomplish a variety of low water-
use landscape designs.

The plants on this list can be grown in the Tucson area with very low to moderate supplemental
irrigation once they are established. Supplemental irrigation should be of sufficient quantity to
saturate the plant’s root zone. All plants listed can grow with less water than traditional high
water-use landscape plants and do not require more than the ADWR regulations for low water-
use plants in the Tucson AMA, a maximum of 18 inches of supplemental irrigation on an
annual basis, not including rainfall. In addition to water requirements, other suitability factors
(e.g. highly invasive, cold hardiness, etc.) may be considered to determine acceptability of
individual plants for addition to the list.

Applications for additions, deletions or exceptions to this list may be submitted to the
Department of Water Resources, Tucson Active Management Area Office for consideration.
Phone: (520) 770-3800. The list and application forms may be downloaded from the ADWR
website at www.azwater.gov/TAMA.

An advisory committee of local plant experts reviews all applications for modification and
submits recommendations to the AMA Director for final consideration.

Updated March 2007

Key to symbols:

Water use (WU)
1 – Very low, irrigate every 3-4 weeks during the growing season after establishment
2 – Low, irrigate every 2-3 weeks during the growing season after establishment
3 – Moderate, irrigate weekly during the growing season after establishment
* Average annual rainfall for Tucson is 11-12"; in low rainfall years the plants on the list may need additional irrigation
to maintain good appearance and plant health.
Irrigation: most plants require regular irrigation during the first 2- 3 year establishment period

Growing Season (GS):
Wi winter – apply water September through March; less frequently in off season
Su summer – apply water March through September; less frequently in off season

Plant Type (PT): Flower Color:
A accent plant S shrub Includes annotations for fall color, berries
C cactus Sc succulent
Gc groundcover T tree H: Mature plant height measured in feet
Gr ornamental grass V vine W: Mature canopy size measured in feet
An annual P perennial

Allergenicity (AL): Cold Hardiness: if plants do not suffer any
a strongly allergenic damage at 20º F or below they are considered
b moderately allergenic cold hardy and do not have a code in the column
c weakly allergenic
(sh) semi-hardy - some dieback in a hard frost (mid 20’s F)
(t) tender - severely damaged or killed in a hard
frost; when temperatures drop to 32º F or below

Note: the timing of the freeze, duration of the freeze, the temperatures the next day and the second night
temperatures will affect how severely damaged the plant will be.

Allergenicity of the plants was classified with the help and advice of Michael J. Schumacher, M.D., Professor,
Dept. of Pediatrics and Head, Allergy-Immunology Section, Univ. of Arizona Health Sciences Center and Mark R.
Sneller, Ph.D., Office of Pollen and Mold Control, Pima County Health Dept.

Native Plants are listed under Origin using the following symbols:
CD Chihuahuan Desert- includes north central and NW Mexico, SW Texas, southern New Mexico and
extreme SE Arizona
SD Sonoran Desert – includes arid and semi-arid areas of NW Mexico, SE California and most of
Arizona south of the Mogollon Rim

Note: Chihuahuan and Sonoran Desert Regions annotated by Matt Johnson, Native Plant Society.

Special Considerations:

Toxic: may be harmful if eaten. Call Arizona Poison Control Center at 626-6016
Invasive (INV): may spread and intrude into natural areas
Spreads in Cultivated Areas (SCA): may spread by seed or sucker in urban or cultivated areas, and in
disturbed soils

Low Water Use Drought Tolerant Plant List - Tucson Active Management Area
WU BOTANICAL NAME COMMON NAME FLOWER COLOR BLOOM SEASON PT H W GS TOXIC AL INV SCA HARDY ORIGIN

2 Abutilon palmeri Indian Mallow Apricot Summer S 3 4 Su sh SD

2 Acacia aneura Mulga Yellow Spring T 18 18 Su c sh Austr.

2 Acacia angustissima White Ball Acacia White Late Spring to Late S 5 5 Su c sh SD
Summer

3 Acacia berlandieri Guajillo White Summer T,S 15 15 Su c CD

1 Acacia constricta Whitethorn, Mescat Acacia Yellow Spring to Summer T,S 20 20 Su c Yes Yes SD,CD

1 Acacia crasspedocarpa Waxleaf Acacia Yellow Spring to Summer T,S 15 15 Su c Austr.

2 Acacia cultriformis Knife-Leaf Acacia Yellow Spring T,S 15 15 Su c sh Austr.

3 Acacia farnesiana (smalli) Southwestern Sweet Acacia Yellow Spring T,S 25 25 Su c Yes Yes SD,CD

1 Acacia greggii Catclaw Acacia Creamy Yellow Spring to Summer T,S 15 20 Su c Yes Yes SD,CD

2 Acacia notabilis Notable Acacia Yellow Late Spring S 8 15 Su c Austr.

2 Acacia redolens Prostrate Acacia Yellow Spring S,Gc 5 12 Su c Austr.

2 Acacia rigidula Black Brush Acacia Yellow Spring T,S 15 9 Su c CD

2 Acacia salicina Willow Acacia Creamy White Spring T 40 30 Su c sh Austr.

2 Acacia saligna Weeping Wattle Orange-Yellow Early Spring T 25 20 Su c sh Austr.

Tuesday, March 27, 2007 Page 1 of 30


3 Acacia schaffneri Twisted Acacia Yellow Spring T 20 25 Su c CD

2 Acacia stenophylla Pencilleaf Acacia Creamy White Early Spring T 30 20 Su c Austr.

2 Acacia willardiana Palo Blanco Pale Yellow Spring T 20 10 Su c sh SD

3 Achnatherum hymenoides Indian Ricegrass Green Spring Gr 2 2 Su a SD,CD
(Oryzopsis hymenoides)

1 Agave americana & varieties Century Plant Yellow Once (Summer) A,Sc 7 8 Su CD

2 Agave angustifolia v. marginata Narrow leaf Agave Greenish-Yellow Once (Summer to A,Sc 3 4 Su t Mex.
Fall)

2 Agave bovicornuta Cow's Horn Agave Yellow Once (Spring to A,Sc 3 4 Su sh Mex.
Summer)

2 Agave bracteosa Spider Agave White, orange Once (Summer) A,Sc 2 2 Su

2 Agave celsii Greenish with Once A,Sc 2 2 Su E. Mex.
purple/red tinge

2 Agave chrysantha Golden Flower Agave Yellow Once (Summer) A,Sc 3 4 Su sh AZ

2 Agave colorata Mescal Ceniza, Blue Yellow Once (Spring to A,Sc 3 3 Su SD
Century Plant early Summer)

2 Agave desmettiana & varieties Smooth Agave Pale Yellow Once (Spring) A,Sc 3 6 Su t Mex.

2 Agave fillifera Agave Green then reddish Once (Summer) A,Sc 2 3 Su CD

2 Agave geminiflora-solitary Twin-flowered Agave Yellow tinged with Once (Fall to Winter) A,Sc 3 3 Su sh Mex.
red

2 Agave havardiana Havard Agave Greenish Yellow Once (Spring) A,Sc 3 4 Su CD



2 Agave lophantha (univittata) Holly Agave; Center Stripe Greenish Yellow Once A,Sc 3 6 Su CD
Agave

2 Agave macroacantha Black Spine Agave Green Once A,Sc 2 2 Su sh Mex.

2 Agave montana Mountain Agave Green, Creamy Once A,Sc 4 6 Su Mex.
White

2 Agave multifilifera Chahuiqui Light Green with Once A,Sc 3 5 Su sh CD
Pink Margins

2 Agave murpheyi Murphy Agave Pale Green Once (Fall) A,Sc 3 3 Su SD
produces bulbils on
flower stalk
2 Agave ocahui Ocahui Agave Yellow Once (Spring to A,Sc 3 3 Su SD
Summer)

2 Agave ovatifolia Whales Tongue Agave Pale Green Once A,Sc 3 3 Su sh Mex.

2 Agave palmeri Palmer Agave Pale Green Once (Summer) A,Sc 4 4 Su SD
produces bulbils on
flower stalk
2 Agave parrasana Parras Agave Yellow Once A,Sc 2 2 Su Mex.

2 Agave parryi & varieties Agave Yellow Once (Summer) A, Sc 2 2 Su Yes CD

2 Agave parryi var. huachucensis Huachuca Agave Pink buds opening Once (Late Spring to A,Sc 2 3 Su Yes Yes SD
to Yellow early Summer)

2 Agave parviflora Small Flowered Agave Pale Yellow Once (Summer) A,Sc .5 .7 Su SD

2 Agave pelona Mescal Pelon Red Once (Spring) A, Sc 2 2.5 Wi SD

2 Agave potatorum Butterfly Agave Pale Green Once A,Sc 1 2 Su t Oaxaca Mex.

2 Agave salmiana ssp. Ferox Pulque Agave, Salm's Agave Yellow above Once A,Sc 4 6 Su sh Central Mex.
Green below



2 Agave scabra Rough-leaved Agave Yellow Once (Late Spring to A,Sc 4 4 Su CD
Fall)

2 Agave schidigera Agave Dark Purple Once (Fall to Spring) A,Sc 2 3 Su Durango
Mex.

2 Agave shawii Yellow Once (Spring) A,Sc 3 5 Su sh Baja Cal.
Mex.

2 Agave striata Needle-leaf Agave, Espidine Yellow, sometimes Once (Summer) A,Sc 3 3 Su Mojave D
Red- Purple

2 Agave utahensis Yellow Once A,Sc 1 2 Su Mojave D

2 Agave victoriae-reginae & Queen Victoria Agave Reddish Purple Once (Summer) A,Sc 1 2 Su Mex.
varieties

2 Agave vilmoriniana Octopus Agave Yellow Once (Spring) A,Sc 4 6 Su sh SD
produces bulbils on
flower stalk
2 Agave weberi Weber Agave Yellow Once A,Sc 4 6 Su Mex.

1 Aloe barbadensis Aloe Vera, Medicinal Aloe Yellow, Orange, Late Winter to Sc 2 2 Wi sh Africa
Red Summer

2 Aloe ferox Cape Aloe Orange Red Late Winter early Sc 15 3 Su sh Africa
Spring

1 Aloe saponaria Tiger Aloe, Mediterranean Yellow, Orange, Winter to Spring Sc 1 1 Wi sh Africa
Aloe Red

2 Aloe variegata Partridge Breast Aloe Dark Pink to Red Winter to Spring Sc 1 1.5 Su Africa

2 Aloe x 'Blue Elf' Orange-Red Winter to Spring A,Sc 2 1 Wi sh garden
variety

2 Aloysia gratissimma Fragrant Bush, Bee Bush White Spring S 6 8 Su Yes Yes SD,CD

2 Aloysia wrightii Wright's Bee Bush White Spring to Fall S 4 4 Su SD,CD



1 Ambrosia deltoidea (Franseria) Triangle-leaf Bursage inconspicuous Mid-Winter to mid- S 2 2 Wi a SD
Spring

1 Ambrosia dumosa (Franseria) White Bursage inconspicuous Mid-Winter to mid- S 2 2 Wi a SD
Spring

3 Amsonia grandiflora Large-flowered Blue Star White tinged with Spring to early S,P 3 3 Su SD
Lavender Summer

2 Anisacanthus quadrifidus & Flame Anisacanthus Orange, Red Summer to Fall S 5 5 Su CD
varieties

2 Anisacanthus thurberi Desert Honeysuckle Orange Spring to Fall S 6 4 Su SD

2 Antigonon leptopus Queen's Wreath Pink, White, Red Summer and Fall V 20 20 Su t SD

2 Aristida purpurea Purple Three-awn Green, Green to Spring to early Fall Gr 2 1 Su Yes Yes SD,CD
Blue foliage

2 Artemisia ludoviciana Prairie Sagebrush, inconspicuous July-Oct S,Gc 1 3 Su a SD
Wormwood

3 Asclepias linaria Pine Leaf Milkweed White Spring to Fall S 3 3 Su Yes SD,CD

1 Asclepias subulata Desert Milkweed Pale Yellow, White Late-Spring to Fall P 3 3 Su Yes sh SD

1 Aster bigelovii Purple Aster Blue Late-Summer to An 1-3 .5 Su t SD
early Fall

1 Aster tanacetifolius Purple Aster Purple Summer to Fall An 1.5 .5 Su t SD,CD

1 Atriplex canescens Four-Wing Saltbush inconspicuous Spring to Fall S 4 8 Su a SD,CD

2 Atriplex lentiformis Quail Bush Greenish Late Winter to Spring S 10 15 Su a SD

2 Atriplex lentiformis breweri Brewer Saltbush Light Yellow Summer S 10 10 Su a SD



1 Atriplex nummularia Old Man Saltbush inconspicuous S 9 15 Su a Austr.

1 Atriplex polycarpa Desert Saltbush inconspicuous S 3 6 Su a SD

2 Atriplex semibaccata Australian Saltbush inconspicuous April through S 1 6 Su a Austr.
September

2 Baccharis hybrid 'Starn' Thompson Broom inconspicuous Tan Gc 4 5 Su c garden
cultivar

2 Baccharis sarothroides and Desert Broom Cream, White Fall S 9 9 Su a SD
hybrids (male varieties only)

1 Bahia absinthifolia Desert Daisy Yellow Spring to Fall P 1 .5 Wi SD

1 Baileya multiradiata Desert Marigold Yellow Spring through Fall P 1 1 Wi Yes SD,CD

3 Bauhinia lunaroides Pink or White Orchid Tree Pink, White Spring to early S 12 10 Su CD
Summer

2 Bebbia juncea Sweet Bush, Chuuckwalla's Yellow Spring to Fall S,P 4 4 Su Yes SD,CD
Delight

3 Berberis harrisoniana Barberry Yellow Late-Winter to early- S 3 3 Su SD
Spring

2 Berberis trifoliata Algerita Yellow Spring S 8 8 Su SD

3 Berlandiera lyrata Chocolate Flower Yellow with Spring to Fall P 2 2 Su Yes SE. AZ
Maroon center

2 Bothriochloa barbinodis Cane Beardgrass, Cane Green Late-Spring to early- Gr 3 3 Su c SD,CD
Bluestem Fall

2 Bougainvillea spp. Bougainvillea Purple, Red, Late Spring to Fall S,V 20 20 Su t Brazil
Orange, Pink

2 Bouteloua spp. Grama Grass varies by species Summer to Fall Gr .5 -3 1 Su a SD,CD
Green, Pink,
Orange, Purple



2 Brachychiton populneus Bottle Tree Pink Late Spring T 45 30 Su Austr.

3 Brahea (Erythea) armata Mexican Blue Palm White Spring T 30 10 Su c SD

3 Buchloe dactyloides Buffalo Grass Tan Summer to Fall Gr .5 .5 Su a CD

1 Buddleia marrubifolia Wooly Butterfly Bush Orange Spring and Summer S 5 5 Su CD

3 Bulbine frutescens and cultivars Shrubby Bulbine Yellow to Orange Fall to Spring Sc 2 2 Wi sh S. Africa

2 Caesalpinia (Poinciana) gilliesii Yellow Bird of Paradise Yellow with Red Late Spring to Fall S 10 6 Su Yes Yes Yes S. Amer.
stamens

2 Caesalpinia (Poinciana) Mexican Bird of Paradise Yellow Spring to Summer S 15 10 Su Yes Yes Yes CD
mexicana (yellow)

3 Caesalpinia cacalaco Cascalote Yellow Winter S 15 18 Su Yes t Mex.

3 Caesalpinia pulcherrima Red Bird of Paradise Red, Orange Summer S 6-8 6 Su Yes sh Caribb.

2 Callaeum lilacina (Mascagnia) Purple Orchid Vine Purple Spring and Summer V 15 10 Su CD

2 Callaeum macropterum Yellow Orchid Vine Yellow Spring and Summer V 25 25 Su Yes sh SD,CD
(Mascagnia macroptera)

2 Calliandra californica Baja Fairy Duster Red Spring through Fall S 6 6 Su sh SD

1 Calliandra eriophylla Fairy Duster, False Mesquite Pink Spring S 3 4 Su SD

2 Calliandra peninsularis Red Calliandra, Baja Fairy Red Winter to Spring S 6 6 Su sh SD
Duster

3 Callistemon citrinus Lemon Bottlebrush Red Off and on all year T,S 15 10 Su c sh Austr.



3 Calylophus hartwegii & varieties Calylophus, Yellow Evening Yellow Spring to Summer Gc 1.5 3 Su, Yes Yes CD, SD
Primrose Wi

3 Campsis radicans Common Trumpet Creeper Orange, Red Summer to Fall V 20 20 Su sh SE U.S.

1 Carnegiea gigantea Saguaro White Early Summer C 50 25 Su SD

3 Carpobrotus edulis Ice Plant Pale Yellow to Summer Gc,Sc 1 6 Wi t Africa
(Mesembryanthemum edulis) Pinkish Purple

2 Cassia artemisioides (Senna) Wormwood Senna, Yellow Late Winter to Spring S 5 5 Wi sh Austr.
Feathery Cassia

2 Cassia nemophila Green Cassia Yellow Winter to Spring S 9 6 Wi Yes Yes Austr.
(C.eremophila)

2 Cassia phyllodinea Silvery Cassia Yellow Winter to Spring S 6 6 Wi Austr.

2 Casuarina cunninghamiana Australian Pine T 70 35 Su b Austr.

2 Casuarina stricta Coast Beefwood T 35 25 Su b Austr.

2 Cathestecum erectum False Grama Green Summer Gr .5 1 Su c SD

1 Celtis pallida Spiny or Desert Hackberry Greenish-yellow Spring S 16 10 Su a SD,CD

3 Celtis reticulata Netleaf or Western Greenish March through T 30 30 Su a SD,CD
Hackberry Summer

3 Centaurea cineraria Dusty Miller Purple, Yellow Summer P 3 3 Wi Medit.

2 Cephalophyllum aestonii `Red Red Spike Ice Plant Reddish-purple Winter to Spring Gc,Sc 0.5 1.5 Wi S. Africa
Spike'

3 Ceratonia siliqua Carob, St. John's Bread Tree Pink Spring T 40 40 Su sh Medit.



3 Cercis canadensis v. mexicana Mexican Redbud Magenta Early Spring T,S 15 15 Su CD

1 Cereus hildmannianus Peruvian Cereus, Hedge White Night blooming in C 20 10 Su sh S. Amer.
(C.peruvianus) Cactus Summer

3 Chamaerops humilis Mediterranean Fan Palm insignificant n/a T 15 10 Su c Spain

3 Chilopsis linearis and cultivars Desert Willow White, Lavender, Late-Spring to Fall T,S 30 30 Su Yes Yes SD,CD
Pink, Purple

2 Chrysactinia mexicana Damianita Daisy Yellow-Gold Spring and Fall S 2 2 Su SW U.S.

2 Cissus trifoliata v. incisa Desert Grape Ivy inconspicuous Summer V 20 20 Su Yes Yes SD,CD

2 Condalia globosa Bitter Condalia White Early Spring T,S 15 20 Su SD
inconspicuous,
fragrant
1 Condalia warnockii v. Condalia, Mexican White Early Spring S 6 5 Su SD,CD
kearneyana Pincushion

2 Convolvulus cneorum Bush Morning Glory White Late Spring to Fall S,Gc 2 3 Wi Yes S. Eur.

3 Convolvulus mauritanicus Ground Morning Glory Sky Blue Spring and Summer Gc .5 2 Wi sh Africa

2 Cordia boissieri Anacahuita, Texas Olive White Spring to Fall T,S 15 15 Su sh CD

2 Cordia parvifolia Littleleaf Cordia White Spring to Fall S 8 10 Su SD,CD

3 Cupressus arizonica & varieties Rough-barked Arizona inconspicuous n/a T 50 20 Su a SD,CD
Cypress

3 Cupressus glabra Smooth Bark Cypress n/a n/a T 40 20 Su a SD

3 Dalbergia sissoo Rosewood inconspicuous T 50 30 Su sh India
green-yellow



2 Dalea bicolor & varieties Dalea Bicolor Blue Fall S 6-8 5-6 Su CD

3 Dalea capitata Yellow Dalea Yellow Spring and Fall Gc 1 3 Su Mex.

3 Dalea frutescens Black Dalea Pink, Rose to Late Fall S 4 5 Su CD
Purple

2 Dalea greggii Trailing Indigo Bush Pink, Purple Spring to Summer Gc 2 9 Su CD

2 Dalea pulchra Indigo Bush Pink, Purple Winter, early Spring S 6 5 Su SD

3 Dalea versicolor v. sessilis Indigo Bush, Dalea Purple Fall to early Spring S 4 5 Su SD

2 Dasylirion acrotriche Green Desert Spoon Cream on single Summer to Fall A 4 5 Su CD
erect flower stalk

2 Dasylirion leiophyllum Green Desert Spoon Greenish-yellowon Spring A 4 6 Su CD
single erect flower
stalk
2 Dasylirion quadrangulatum Toothless Desert Spoon Greenish and Late Spring A 4 5 Su CD
(D.longissimum) White

2 Dasylirion texanum Green Desert Spoon Creamy White on Late Spring to early A 5 5 Su CD
single erect flower Fall
stalk
2 Dasylirion wheeleri Sotol, Desert Spoon Tan on erect stems Mid to late Summer A 4 5 Su SD,CD

2 Datura wrightii Sacred Datura, Jimson White Late- Spring to early Gc 3 6 Su Yes sh SD
Weed, Thorn Apple Fall

2 Dicliptera resupinata Native Dicliptera Purple Spring to Fall P 2 3 Su Yes SD,CD

2 Digitaria californica Arizona Cottontop White Summer to early Fall Gr 3 1.5 Su a SD,CD

3 Dimorphotheca sinuata African Daisy, Cape Marigold Orange, White, Winter to Spring An 0.5 0.5 Wi S. Africa
Yellow



2 Dodonaea viscosa & varieties Hopbush Green, Spring to Fall S 15 12 Su SD,CD
inconspicuous

2 Ebenopsis ebano Texas Ebony Cream White Late Spring to Fall T 30 20 Su sh CD
(Pithecellobium flexicaule)

1 Echinocactus grusonii Golden Barrel Yellow Summer C 3 2 Su Mex.

1 Echinocereus spp. Hedgehog, Rainbow Cactus varies by species, Spring C 2 2 Su CD,SD
Red, Yellow, Pink,
Purple
1 Echinopsis spp. & varieties Easter Lily, Sea Urchin Pink (various) Spring to Summer C 2 2 Su S. Amer.
Cactus

1 Encelia californica California Brittlebush (green) Yellow Winter to Spring S 4 4 Wi c sh So. Calif.

1 Encelia farinosa Brittlebush Yellow Early Spring S 3 3 Wi c sh SD

1 Ephedra nevadensis Ephedra, Morman Tea Green Spring S 5 4 Su Yes SD
inconspicuous

3 Eragrostis intermedia Plains Lovegrass Light Pink, White Summer to Fall Gr 3 1 Su a SD,CD

1 Eremophila decipiens Emu Bush Dark red Winter to Spring S 5 5 Su Austr.

2 Eremophila hybrid Summertime Blue Blue Spring through S 6 6 Su, sh Austr.
Summer Wi

2 Eremophila laanii 'pink beauty' Emu Bush Pink Spring S 8 8 Su, sh Austr.
Wi

2 Eremophila maculata 'valentine' Valentine Emu Bush Red Early to late Spring S 5 6 Austr.

2 Ericameria laricifolia & cultivars Turpentine Bush Yellow Fall S 2-3 2-3 Su SD
(happloppapus larcifolius)

2 Eriogeron divergens Native Fleabane White to Lavender Spring to Summer Gc,An, 1 2 Wi Yes SW U.S.
P



2 Eriogonum fasiculatum v. Flattop Buckwheat White to Pink Summer S 1.5 2 Wi S. CA, AZ,
poliofolium UT

2 Eriogonum wrightii Wright Buckwheat White to Pink Summer to early Fall S 1.5 2 Wi SD

1 Erioneuron pulchellum Fluffgrass White Summer and Fall Gr .5 .5 Su a SD,CD

3 Eschscholtzia californica California Poppy Orange, Pale - Late-Spring An 2 2 Wi SD
yellow,
occasionally White
3 Eschscholtzia mexicana Mexican Gold Poppy Orange, pale- Early-Spring An 1 1 Wi SD
yellow,
occasionally White
3 Eucalyptus camaldulensis Red River Gum Yellow Winter to Spring T 120 50 Su c Austr.
inconspicuous

2 Eucalyptus campaspe Silver Gimlet inconspicuous Late Winter to Spring T 35 25 Su c sh Austr.

2 Eucalyptus formanii Eucalyptus White Summer T 20 20 Su c Austr.

2 Eucalyptus leucoxylon (rosea) White Iron Bark White, Red Fall to Winter T 40 30 Su c Austr.

2 Eucalyptus microtheca Tiny Capsule Eucalyptus, Creamy White Summer T 35 35 Su c Austr.
Coolibah inconspicuous

2 Eucalyptus papuana Ghost Gum White Summer T 40 25 Su c sh Austr.
inconspicuous

2 Eucalyptus polyanthemos Silver Dollar Gum Cream-white Winter T 40 30 Su c Austr.

2 Eucalyptus rudis Desert Gum T 100 50 Su c Austr.

2 Eucalyptus sargentii Salt River Mallet Yellow T 40 30 Su c sh Austr.

2 Eucalyptus spathulata Swamp Mallee Cream and Gold Summer T 20 20 Su c Aust



1 Euphorbia antisyphilitica Wax Plant, Candelilla Creamy White - Spring and mid S 3 3 Su CD
Red centers Summer

2 Euphorbia myrsinites Euphorbia Gc 1 3 Wi S. Europe,
Cnt. Asia

2 Euphorbia rigida (biglandulosa) Gopher Plant Chartreuse Winter to Spring A,Sc 2 3 Wi Yes Yes Africa

2 Eysenhardtia orthocarpa Kidneywood White Summer T 10 10 Su CD, SD

3 Eysenhardtia texana Texas Kidneywood White Spring to Summer T 8 8 Su CD

3 Feijoa sellowiana Pineapple Guava White with red Spring T,S 15 15 Su S. Amer.
stamens

1 Ferocactus spp. Barrel Cactus varies by species- Varies Winter C 5 1.5 Su SD,CD
Yellow, Red, through early Fall
Orange, Purple
1 Fouquieria columnaris Boojum White Late Summer to T,A 75 1 Wi sh Baja
early Fall

1 Fouquieria macdougalii Mexican Tree Ocotillo Red Spring S,A 6 4 Su t SD

1 Fouquieria splendens Ocotillo Red Mid-Spring A 15 8 Su SD,CD

3 Fraxinus greggii Littleleaf Ash inconspicuous T,S 18 15 Su a CD
Green

2 Gaillardia aestivalis spp. winkleri Winkler Gaillardia P 2 3 Wi sh TX

2 Gaillardia pinnatifida Blanket Flower Late Spring to early P 2 2 Wi SW U.S.
Fall

3 Gaillardia pulchella Fire Wheel, Blanket Flower Deep Maroon Late Spring to early An 1.5 1.5 Wi CD
center with Yellow Fall
outside edges
3 Gazania rigens & varieties Gazania Orange, Yellow, Winter to Spring, Fall Gc .5 2 Wi Africa
White

Thursday, March 29, 2007 Page 13 of 30


3 Geijera parviflora Australian Willow White Spring T 25 20 Su Austr.

1 Geoffroea (Gourleia) Chilean Palo Verde Yellow Spring T 20 15 Su S. Amer.
decorticans

1 Glandularia gooddingii Goodding Verbena Lavender, Pink Spring P 1.5 3 Wi, SD
(Verbena) Sp

3 Glandularia pulchella Moss Verbena, Rock Purple Spring to Fall P 1 5 Su, Yes S. Amer.
(V.tenuisecta) (V. tenera) Verbena Wi

2 Gossypium harknessii Gossypium, Wild Cotton Yellow Spring and Fall S 3 3 Su t SD

3 Guaiacum coulteri Guayacan Blue-Purple Spring through T,S 12 10 Su sh SD
Summer

1 Gutierrezia sarothrae Snakeweed Yellow Early Fall S,P 2 2 Su Yes W. U.S.,
CAN, Mex.

3 Hamelia patens Texas Firecracker Bush Red, Orange Summer S 10 5 Su sh FL, Caribn.

2 Havardia mexicana Mexican Ebony Creamy Yellow Spring T 30 30 Su SD
(Pithecellobium mexicanum)

2 Havardia pallens Tenaza White Late Spring to Mid- T 30 12 Su c sh CD
(Pithecellobium pallens) Summer

2 Hesperaloe campanulata Bell Flowering Hesperaloe Pink Summer A 3 3 Su NM

2 Hesperaloe funifera Giant Hesperaloe Creamy White Summer A 5 5 Su CD

2 Hesperaloe nocturna Night Flowering Hesperaloe White and Green Spring to Fall A 3 3 Su SD

2 Hesperaloe parviflora & Red Yucca, Yellow Yucca Pink, Red, Yellow Spring and Summer A 3 4 Su CD
varieties

3 Heteropogon contortus Tanglehead Brown Summer and Fall Gr 3 2 Su c Yes Yes SD



2 Hibiscus coulteri Yellow Hibiscus, Coulter's Pale Yellow late Spring to Fall S 3 3 Su SD,CD
Hibiscus

2 Hilaria berlangeri Curly mesquite Green late Summer to Fall Gr .5 1 Su b SD,CD

2 Hilaria mutica Tobosa grass Green Summer to Fall Gr 2 2 Su b SD,CD

2 Hilaria rigida Big galleta grass Green Spring through Fall Gr 3 1 Su b SD,CD

1 Hyptis albida (emoryii) Desert Lavender Purple Spring through Fall S 8 8 Su sh SD

1 Jatropha cardiophylla Limberbush inconspicuous Summer S 3 4 Su SD
White

1 Jatropha dioica Jatropha inconspicuous Summer S 3 3 Su t CD

3 Juniperus chinensis and Juniper n/a T 20 10 Su b Asia
culitvars

3 Juniperus deppeana Alligator Bark Juniper inconspicuous T 40 30 Su a SD,CD

3 Juniperus sabina Sabine Juniper inconspicuous S 1.5 8 Su b AZ

2 Justicia californica and cultivars Chuparosa Red Spring S 3 4 Su sh SD
(Beloperone)

2 Justicia candicans Red Jacobinia Red, orange Fall to Spring S 5 3 Su sh SD

3 Justicia fulvicoma Mexican Plume Reddish Orange Spring and Fall S 2 3 Su t Mex.

3 Justicia spicigera Firecracker Bush Orange Summer to Winter S 4 4 Su sh Mex.

3 Lantana camara and cultivars Bush Lantana Orange,Yellow, Spring to Fall S 3 4 Su Yes Yes t U.S., Tropics
Red, Pink



3 Lantana montevidensis Trailing Lantana Lavender Spring to Summer Gc 1.5 6 Su t S. Amer.

1 Larrea tridentata (divaricata) Creosote Bush, Greasewood Yellow Early Spring to Fall S 8 8 Su SD,CD

3 Leptochloa dubia Green Sprangle-Top Green Summer Gr 3 1 Su a CD,SD

2 Leucaena retusa Golden Leadball Yellow Spring to Summer T 20 15 Su sh CD

2 Leucophyllum spp. & varieties Texas Ranger varies by species Summer humidity S 3-10 3-10 Su CD
Pink, Purple,
Lavender, White
3 Linum grandiflorum `Rubrum' Scarlet Flax Scarlet Spring An 2 1 Wi N. Africa

3 Linum lewisii Blue Flax Bright Blue Spring An 2 1 Wi SD,CD

1 Lophocereus schotti Senita Pink Spring to Summer A, C 15 10 Su sh SD

1 Lophocereus schotti, ssp. Totem Pole Cactus Pink Spring to Summer A, C 10 8 Su Baja
Monstrosus

2 Lotus rigidus Desert Deerweed, Deer Yellow and Orange Spring Gc,P 1.5 2 Wi SD
Vetch

1 Lupinus arizonicus Lupine Purple Winter to Spring An 1 1 Wi SD

1 Lupinus sparsiflorus Desert Lupine Purple Late Winter to Spring An 1 1 Wi SD

1 Lupinus succulentus Arroyo Lupine Deep Blue Spring An 2 1 Wi SD

2 Lycium andersonii Desert Wolfberry Lavender, followed Spring S 6 6 Su SD
by Red berries

1 Lycium exsertum Thornbush White-Purple Spring S 8 8 Su SD
followed by Red
berries



1 Lycium fremontii Wolfberry, Tomatillo White-Lavender Spring S 10 8 Su SD
followed by Red
berries
2 Lycium pallidum Desert Thorn White, followed by Spring S 3-9 4-6 Su SD, Mojave D
Red berries

3 Lysiloma thornberi Feather Tree White Late Spring T,S 20 20 Su Yes Yes sh SD

2 Macfadyena unguis-cati Cat's Claw Vine Yellow Spring V 30 30 Su Yes Yes U.S.

1 Maireana sedifolia Pearl Bluebush Tan inconspicuous S 2 3 sh Austr.

2 Malephora crocea Croceum, Ice Plant Copper to red Late Fall to late Gc,Sc 1 6 Su S. Africa
Winter

3 Malephora lutea Rocky Point Ice Plant Yellow Nearly all year Gc, P 8 4 Su sh S. Africa

1 Mamillaria spp. Pincushion, Fishhook Cactus varies by species Varies by species C 0.5 0.5 Su CD, SD
Cream, Yellow, Spring to Summer
Red, Pink
2 Maytenus phyllanthoides Mangle Dulce Green S 12 12 Su SD,CD
inconspicuous

2 Melampodium leucanthum Blackfoot Daisy White Early Spring to Fall Gc 2 2 Su Yes Yes SD,CD

2 Merremia aurea Yellow Morning Glory Vine Yellow Summer to Fall V 25 25 Su t SD

2 Mimosa dysocarpa Velvetpod Pink, White Summer S 6 6 Su c SD

3 Mirabilis multifora Desert Four O'clock Hot Pink Summer to early Fall Gc,P,V 3 4 Su U.S.

3 Muhlenbergia capillaris Regal Mist Pink Fall Gr 3 3 Su U.S.

3 Muhlenbergia dumosa Bamboo Muhly Green dries to tan Spring to Summer Gr 6 6 Su a SD



2 Muhlenbergia emersleyi Bullgrass Purple dries to tan Fall Gr 4 4 Su a SD

3 Muhlenbergia lindheimeri Autumn Glow Yellow dries to tan Fall Gr 5 5 Su a TX

1 Muhlenbergia porteri Bush muhly Pink Late Summer to Fall Gr 2 3 Su a SD,CD

2 Muhlenbergia rigens Deer grass Tan Summer to Fall Gr 4 4 Su a SD

3 Muhlenbergia rigida Purple Muhlenbergia Purple dries to tan Late Summer to Fall Gr 5 3 Su a SD

3 Myoporum parvifolium Purple Myoporum White Spring to Summer Gc 0.5 9 Su Austr.

3 Myrtus communis & varieties True Myrtle, Roman Myrtle White Spring S 6 5 Su Medit.

3 Nandina domestica & varieties Heavenly Bamboo White followed by Spring S 6 4 Su Asia
Red berries

2 Nassella tenuissima Mexican Feather Grass Tan Fall Gr 3 1 Su b CD

2 Nerium oleander & varieties Oleander Pink, White, Red, Mid-Spring to Fall S 4-20 5-12 Su Yes sh Asia
Salmon

1 Nolina beldingii Belding's Nolina White A 3 6 Wi Baja

1 Nolina bigelovii Beargrass Cream Summer A 6 4 Su SD

1 Nolina lindheimeriana Lindheimer's Nolina White A 3-4 2-3 Su TX

1 Nolina matapensis Tree Beargrass White Summer A 25 6 Su SD

1 Nolina microcarpa Beargrass Greenish White Summer A 3 6 Su SD



1 Nolina nelsoni Blue Nolina Green A 4-5 6-10 Su Mex.

1 Nolina parryi Parry's Beargrass A 5 5 Su SD

1 Nolina texana Bear Grass White Late Spring A 3 3 Su TX, NM

2 Oenothera berlandieri Mexican Evening Primrose Pink Spring to Fall Gc, P 1 3 Su, Yes Yes sh CD, TX, Mex.
(speciosa) Wi

2 Oenothera caespitosa White Evening Primrose, White Spring Gc, P 1 3 Wi, W. U.S.
Tufted Evening Primrose Sp

2 Oenothera stubbei Chihuahuan Primrose Yellow Summer to Fall Gc, P 1 2 Su, sh SD, NE Mex.
Wi

2 Olea europaea 'Swan Hill', Fruitless non-polinating Olive White Spring T 30 30 Su Medit.
'Wilsoni'

1 Olneya tesota Desert Ironwood, Tesota Lavender-Pink Late Spring to early T 30 25 Su sh SD,CD
Summer

1 Opuntia basilaris Beavertail Prickly Pear Hot Pink Mid Spring C 2 4 Su SD

1 Opuntia bigelovii Teddy Bear Cholla Green Early Spring C 6 3 Su SD

1 Opuntia engelmanii Engelmann's Prickly Pear Orange, Yellow Spring C 5 6 Su SW. U.S.,
Mex.

1 Opuntia ficus-indica Indian Fig Yellow Spring C 10- 15 Su sh Mex.
15

1 Opuntia microdasys Rabbit Ears Prickly Pear Yellow Spring C 3 6 Su

1 Opuntia santa rita tubac Purple Pancake Yellow Spring C 6 4 Su AZ cultivar

1 Opuntia turpinii Pinecone Prickly Pear Pink Summer C 3 1 Su W. Argentina



1 Opuntia versicolor Staghorn Choll Orange, Red, Spring C 10 6 Su SD
Yellow

1 Opuntia violacea macrocentra Long Spine Prickly Pear Yellow, Red Spring to early C 2 3 Su SD
Summer

1 Opuntia violacea 'Santa Rita' Santa Rita Prickly Pear Yellow Spring C 4 4 Su AZ

3 Osteospermum fruticosum Trailing African Daisy White, Purple Winter to Spring Gc 1 4 Wi c sh Africa

2 Pappophorum mucronulatum Pappusgrass White Spring to early Fall Gr 3 2 Su a SD

2 Parkinsonia praecox Palo Brea Yellow Spring T 30 25 Su b sh SD
(Cericidium)

2 Parkinsonia florida (Cercidium Blue Palo Verde Yellow Early Spring T 30 30 Su b Yes Yes SD
floridum)

2 Parkinsonia hybrid "Desert Desert Museum Palo Verde Yellow Spring to Summer T 30 30 Su b SD,CD
Museum"

1 Parkinsonia microphylla Littleleaf or Foothill Palo Yellow Late Spring T 20 20 Su b SD
(Cercidium microphyllum) Verde

1 Parkinsonia x sonorae Sonoran Palo Verde Yellow Spring T 20 20 Su b SD
(Cercidium)

2 Passiflora foetida Passion Flower White, Purple Summer V 10 10 Su Yes Yes sh SD

1 Pedilanthus macrocarpus Slipper Flower, Lady's Red-Pink Spring and Fall A,Sc 3 3 Su Yes SD
Slipper, Candelilla

2 Pennisetum setaceum Purple Fountain Grass Pink, Purple Summer Gr 4 5 Su b Africa
`Cupreum'

2 Penstemon ambiguus Pink Plains Penstemon Pink Summer P 3 3 Su W. U.S.

3 Penstemon amphorellae Blue Late Spring P 1 2 Su Central Mex.



3 Penstemon baccharifolius Cutleaf Penstemon Red-Rose Summer P 2 3 Su CD

3 Penstemon barbatus Beardtongue Penstemon Red Summer to early Fall P 1 1 Wi SD,CD

3 Penstemon cardinalis Cardinal Penstemon Red Spring, Summer P 1 1-2 Wi TX

3 Penstemon cobaea Foxglove Penstemon White-lavender Spring P 1 1 Wi TX?

3 Penstemon eatoni Firecracker Penstemon Red Late Winter to Early P 1 1 Wi SD
Spring

3 Penstemon fendleri Fendler Penstemon Violet Spring through P 1 1 Wi OK, AZ, NM
Summer

3 Penstemon grandiflorus Large Fendler Penstemon Lavender Early Summer P 1 1 Wi TX

3 Penstemon palmeri Palmer Penstemon White, Pink Spring through P 2 2 Wi SW U.S.
Summer

3 Penstemon parryi Parry Penstemon Pink, Red Early Spring P 1 1 Wi Yes Yes SD

3 Penstemon pinifolius Pineleaf Penstemon Red, Orange Summer P 1 2 Su No. AZ, UT

3 Penstemon pseudospectabilis Canyon Penstemon, Rose-purple Spring to mid- P 1 1 Wi SD
Mohave Beardtongue Summer

3 Penstemon spectabilis Mojave Penstemon, Royal Blue-purple Spring to mid- P 1 1 Wi CA, N. Baja
Penstemon Summer Mex.

3 Penstemon strictus Rocky Mountain Penstemon Blue Early Summer P 1 1 Su W. U.S.

Penstemon subulatus Little Beardtongue Red Spring P 1 1 Wi SD

3 Penstemon superbus Superb Penstemon, Santa Coral-red Spring P 2 2 Wi CD, SD, N.M.
Rita Penstemon



3 Penstemon triflorus Hill Country Penstemon Rose Early Spring P 1 1 Wi TX

3 Penstemon wrightii Texas Rose, Wright's Orange- Pink Spring to Summer P 1 1 Wi TX
Penstemon

1 Pentzia incana Karoo Bush Yellow Spring to Summer Gc 1 3 Su Yes Yes S. Africa

2 Phacelia campanularia Desert Bluebells, Desert Blue Early Spring An 1 1 Wi SD
Canterbury Bells

2 Phacelia tanacetifolia Tansy Phacelia Blue, Purple Early Spring An 1 1 Wi N. Calif., N.
Baja

2 Phoenix canariensis Canary Island Date Palm Cream, White Summer T 60 30 Su c Canary
Islands

2 Phoenix dactylifera Date Palm insignificant Summer T 100 20 Su c Asia

3 Phyla nodiflora Lippia White Summer Gc .125 0.5 Su sh Trop.
America

2 Pinus edulis Piñon Nut Pine insignificant T 25 15 Su c NM, Calif, AZ

2 Pinus eldarica Afghan Pine insignificant T 50 25 Su c Asia

2 Pinus halepensis Aleppo Pine insignificant T 80 60 Su c Medit.

2 Pinus monophylla Singleleaf Piñon Pine insignificant T 25 15 Su c Mojave D, N.
AZ

2 Pinus pinea Italian Stone Pine insignificant T 60 50 Su c Medit.

3 Pinus roxburghii Chir Pine insignificant T 80 40 Su c Asia

2 Pistacia atlantica Mt. Atlas Pistache insignificant Early Summer T 60 50 Su c Medit.
greenish white



3 Pistacia atlantica x integerrima Pistache hybrid tereb. x T 30 30 Su c t Medit. x Asia
integerrima

3 Pistacia chinensis Chinese Pistache Green (Red T 60 50 Su c Asia
leaves) Fall color

2 Pistacia vera Pistachio T 30 30 Su c t Asia

2 Pittosporum phillyraeoides Willow Pittosporum Yellow Spring T 20 15 Su Austr.

3 Pittosporum tobira & cultivars Mock Orange White S 6 10 Su Asia

1 Plantago spp. Indian Wheat Cream, White Spring An .25- 0.5 Wi SD,CD
2

3 Poliomintha maderensis Lavendar Spice Lavender Spring through S 2 2 Su CD
Summer

3 Portulacaria afra Elephant Food Pink inconspicuous rarely blooms in U.S. Sc 12 12 Su, t S. Africa
Wi

2 Prosopis hybrid South American Mesquite Light Yellow Spring T 40 40 Su b S. Amer.

2 Prosopis glandulosa & varieties Texas Honey Mesquite Creamy Yellow Spring T 30 30 Su b CD

2 Prosopis pubescens Screwbean Mesquite Yellow Spring T 20 20 Su b SD,CD

2 Prosopis velutina (juliflora) Velvet Mesquite Yellow Spring T 30 30 Su b SD

1 Psilostrophe cooperi Paper Flower Yellow Spring and Summer P 2 2 Wi SD,CD

1 Psilostrophe tagetina Paper Flower Yellow Spring and Summer P 2 2 Wi SD,CD

3 Punica granatum & varieties Pomegranate Dark Orange, Red Summer T,S 20 15 Su India



3 Pyracantha & varieties Pyracantha (red berried White followed by Spring S 20 12 Su Asia
types) Red berries

3 Quercus arizonica Arizona White Oak Green T 60 30 Su b SD,CD
inconspicuous

3 Quercus buckleyi (Q texana) Texas Red Oak Green T 30 30 Su b W. TX
inconspicuous;
Red Fall Color
3 Quercus emoryi Emory Oak Green T 50 40 Su b SD,CD
inconspicuous

3 Quercus fusiformis Escarpment Live Oak Green T 50 50 Su b W. TX
inconspicuous

3 Quercus gambelii Gambel Oak Green T,S 30 15 Su b SW U.S.
inconspicuous

3 Quercus ilex Holly Oak Green T 50 50 Su b Medit.
inconspicuous

3 Quercus muhlenbergia Chinquapin Oak Green T 30 30 Su b W. TX
inconspicuous,
Orange and
3 Quercus polymorpha Monterey Oak Green T 80 60 Su b W. TX
inconspicuous

3 Quercus suber Cork Oak Green T 60 40 Su b Medit.
inconspicuous

2 Quercus turbinella Shrub Live Oak Green S 10 10 Su b W. U.S.
inconspicuous

3 Quercus virginiana Live Oak Green T 50 50 Su b SE U.S.
inconspicuous

2 Rhus microphylla Littleleaf Sumac White, Red Fall Spring before leaves S 10 10 Su Yes c CD, SD
Color

2 Rhus ovata Sugar Bush, Sugar Sumac Pink & White Spring S 15 15 Wi Yes c Calif., AZ
followed by small
red fruit
2 Rhus trilobata & varieties Three Leaf Sumac, Skunk, inconspicuous, Spring S 5 8-10 Su c Can.,U.S.,
Bush small red fruit, Fall Mex.
color



2 Rhus virens Evergreen Sumac White followed by Spring S 12 12 Su Yes c CD, SD
showy berries

3 Rosa banksiae Lady Banks Rose, White, Yellow Spring S,Gc,V 20 20 Su China
Tombstone Rose

2 Rosmarinus officinalis & Rosemary Blue Spring and Fall S 3 8 Su Medit.
varieties

3 Ruellia brittoniana & varieties Dwarf Ruellia Blue, White Throughout warm Gc 6 12 Su sh Mex.
season

2 Ruellia californica Sonoran Desert Ruellia Blue, Purple Late Spring to Fall S 4 4 Su sh SD

2 Ruellia peninsularis Baja Ruellia Blue, purple Spring to Summer S 4 4 Su sh SD

2 Ruschia uncinatus Ruschia Pink Summer Gc,Sc 1.5 1.5 Su S. Africa

2 Salvia chamaedryoides Blue Chihuahuan Sage Cobalt blue Spring and Fall S 2 2 Su CD

2 Salvia clevelandii Cleveland Sage Blue Late Spring to S 5 5 Wi S. CA, Baja
Summer

3 Salvia columbariae Chia Blue Spring An .5 .25 Wi SD

2 Salvia dorri v. dorrii Mojave Sage Blue-violet Late Winter and S 2 2 Wi MD
Spring

3 Salvia farinacea Mealy Cup Sage, Texas Violet, Blue, White Spring to early Fall S 1 1 Su CD
Violet

3 Salvia greggii Red Chihuahan Sage, Red, Hot Pink, Spring to Summer S 3 3 Su CD
Autumn Sage Purple, White

2 Salvia hybrid (S.dorrii x Trident, Carl Nielson Sage Cobalt Blue Spring S 3 3 Wi SD hybrid
S.clevlandii x S.mojavensis)

3 Salvia leucantha Purple Mexican Bush Sage Purple Spring to Fall S 4 4 Su sh Mex.



2 Salvia mohavensis Mohave Sage Lavender Spring to mid- S 3 3 Wi SD, MD
Summer

3 Sambucus nigra spp. Cerulea Mexican Elderberry Creamy White Winter and Spring T 30 20 Wi SD,CD
(S.mexicana)

2 Santolina chamaecyparissus Lavender Cotton Yellow/ silvery Spring S,Gc 2 3 Wi Medit.
foliage

3 Santolina virens Green Santolina Creamy Yellow Spring S,Gc 2 2 Wi Medit.

3 Sapindus sapnaria saponaria Soapberry Creamy White Late Spring T 30 30 Su Yes sh Mex.

2 Sapindus sapnaria drummondii Soapberry Creamy White Late Spring T 30 30 Su Yes SD,CD

3 Schinus molle California Pepper Tree Yellow-white Summer T 40 45 Su b S. Amer.
(insignificant)

2 Senecio cineraria Dusty Miller, Silver Plant Yellow/silvery Spring P 2 2 Wi Yes Medit.
foliage

1 Senna covesii (Cassia) Desert Senna Yellow Late Spring to early P 1 1 Su SD
Fall

2 Senna lindheimeriana (Cassia) Senna Yellow Summer to Fall S 3 2 Wi sh CD

1 Senna purpussi (Cassia) Baja Senna Yellow Winter to Spring S 6 5 Wi sh Baja

2 Senna wislizenii (Cassia) Cassia, Shrubby Senna Yellow Summer S 8 8 Su SD,CD

2 Sesuvium verrucosum Sea Purslane, Ice Plant Pink Early Spring to Fall Gc 0.5 3 Su t Africa

1 Simmondsia chinensis & Jojoba, Goat Nut Green Spring S 8 8 Wi a SD
varieties inconspicuous

2 Sophora secundiflora & varieties Texas Mountain Laurel Purple to Lavender Spring T,S 25 15 Su Yes CD



2 Sphaeralcea ambigua & Globe Mallow Orange, White, Early Spring and Fall P 3 3 Wi SD
varieties Red, Purple,
Lavender
1 Sporobolus airoides Alkali Sacaton White Summer Gr 5 3 Su a SD,CD

1 Sporobolus contractus Spike Dropseed White Summer to Fall Gr 3 1 Su a SD,CD

3 Sporobolus cryptandrus Sand Dropseed White Gr 2 1 Su a SD,CD

2 Sporobolus flexuosus Mesa Dropseed White Summer to early Fall Gr 3 1 Su a SD,CD

3 Sporobolus wrightii Big Sacaton Green Late Summer to Fall Gr 5 4 Su a SD,CD

1 Stenocereus thurberi Organ Pipe Cactus White, Purple Summer C 15 12 Su t SD
(Lemaireocereus)

1 Stenocereus marginatus Mexican Fence Post Pink or Red Mid-Spring A, C 12 1 Su sh Mex.
(pachycereus) outside- whitish
inside
3 Tagetes lemmoni Mountain Marigold Orange, Yellow Spring and Fall P 3 6 Su SD

2 Tecoma stans v. angustata AZ Yellow Bells Yellow Late Spring to Fall S 10 8 Su sh SD,CD

3 Tecomaria capensis Cape Honeysuckle Orange Late Fall to Winter S,V 8 6 Su sh Africa

2 Tetraneuris acaulis Angelita Daisy Yellow All Year, heaviest in P 1 1 Su SW U.S.
(Hymenoxys) Spring

2 Teucrium chamaedrys Prostrate Germander Lavender Spring and Summer Gc 1 2 Su Yes Medit.
(prostratum)

2 Teucrium fruticans Bush Germander Blue or Lavender Spring to Fall S 8 8 Su Medit.

2 Thymophylla pentachaeta Golden Dyssodia, Golden Yellow Late Spring to Fall Gc 0.5 0.5 Su, SD,CD
(Dyssodia) Fleece Wi



2 Thymophylla acerosa Scrubby Dogweed Yellow Late Spring to early Gc .5 .5 Su SD,CD
(Dyssodia) Fall

2 Trichloris crinita Two-feather Trichloris White dries to Tan - Late Spring to Fall Gr 3 1 Su a SD,CD
reddish highlights

2 Trichocereus & varieties Trichocereus Cactus White, Yellow, Varies by variety C 1-15 1-5 Su S. Amer.,
Oragne, Red Spring, Summer, Fall Argentina

2 Tridens muticus Slim Tridens White Spring to Fall Gr 1.5 0.5 Su b SD,CD

2 Trixis californica Trixis Yellow Spring S 3.5 3.5 Su sh CA to TX

3 Ungnadia speciosa Mexican Buckeye Rose-pink Spring T 12 12 Su CD

2 Vauquelinia californica & Arizona Rosewood White Spring to Summer T,S 25 15 Su SD
varieties

2 Vauquelinia corymbosa & Mexican Rosewood White Spring S 15 20 Su TX, Mex.
varieties inconspicuous

3 Verbena peruviana Peruvian Verbena Pink, Blue, Purple Spring to Fall P 0.2 3 Su S. Amer.

3 Verbena rigida Sandpaper Verbena Purple Summer to Fall Gc,P 2 4 Su Yes S. Amer.

3 Verbena tenuisecta 'Edith' Moss Verbena Lavender, Purple Spring Gc P 1-2 4-5 Su, Yes S. Amer.
Wi

2 Verbesina encelioides Crown Beard Yellow Spring An 3 3 Wi Yes SD,CD

2 Viguiera parishii (V deltoidea) Goldeneye Yellow Spring, Late Summer P 3 3 Wi, SD
Su

3 Viguiera stenoloba Skeleton-leaf Goldeneye Yellow Summer to Fall S 4-6 3-4 Su sh TX, NM, No.
Mex.

2 Vitex agnus-castus Chaste Tree, Monk's Pepper Blue Summer to Fall T,S 25 25 Su Medit.



2 Washingtonia filifera California Fan Palm Cream Summer T 45 15 Su c Yes SD

2 Washingtonia robusta Mexican Fan Palm Cream Summer T 75 10 Su c Yes sh SD

3 Wedelia texana and cultivars Rough Zexmenia, Devil's Orange, Yellow Spring through Fall S 2-3 2-4 Su Yes sh SW U.S., TX
(Zexmenia hispida) River

3 Xylosma congestum Xylosma insignificant Spring T,S 15 15 Su China

2 Yucca aloifolia Spanish Bayonet Yucca White Spring to Summer A 10 5 Su SD

1 Yucca baccata Banana Yucca White Late Spring to A 3 5 Su SD,CD
Summer

2 Yucca baileyi White Summer A 4 2 Su CO, UT

1 Yucca brevifolia Joshua Tree White, Green Late Winter to early A 20 20 Wi S. Calif,
Spring S.W. Utah

2 Yucca constricta Buckley Yucca White Spring through A 5 5 Su TX
Summer

2 Yucca elata Soaptree Yucca White Late Spring to A 20 8 Su SD,CD
Summer

2 Yucca faxoniana (Y Giant Dagger Yucca White Summer A 15 4 Su CD
carnerosana)

2 Yucca filifera (australis) St. Peter's Palm White A 2.5 4 Su Mex.

2 Yucca glauca Soapweed Yucca White Summer A 3 3 Su U.S.

2 Yucca harrimaniae Harriman's Yucca White Mid-Summer A 6-22 18 Su SW U.S.

2 Yucca pallida Paleleaf yucca White Late Spring A 2 2 Su TX



2 Yucca rigida Mexican Blue Dagger Yucca White Summer A 12 5 Su CD

2 Yucca rostrata Beaked Yucca White Summer A 12 9 Su CD

2 Yucca schidigera Mojave Yucca White Spring A 9-15 4-6 Su W. U.S, Mex.

2 Yucca schottii Mountain Yucca White Early Summer A 15 4 Su SD

2 Yucca thompsoniana Thompson Yucca White Early Summer A 10 5 Su SW TX

2 Yucca torreyi Torrey's Yucca White Spring A 8-15 6 Su TX, NM, No.
Mex.

1 Yucca treculeana Spanish Dagger, Palma Pita White Spring A 20 ? Su CD, W. TX

1 Yucca whipplei Our Lord's Candle White & Purple Once (Early-Spring) A 3 6 Su SD

3 Zauschneria californica & Hummingbird Trumpet Red, Orange Summer and Fall Gc 2 2 Su SD
varieties

3 Zephyranthes spp. & varieties Rain Lily varies by species- Summer Gc,P 1 1.5 Su S. Africa
White, Rose, Pink

1 Zinnia acerosa Desert Zinnia White-orange Late Spring to Fall P 1 1 Su SD,CD
centers

2 Zinnia grandiflora Prairie Zinnia Yellow, Orange Summer to Fall P 1 1 Su SE. AZ, NM

2 Zizyphus jujuba Chinese Date, Common Yellow-white Spring T 40 30 Su Yes Asia
Jujube


Low Water Use Drought Tolerant Plant List - Tucson, Arizona

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