Companion Planting Fact Sheet - Brian Sams
- 1. Companion Planting – Fact Sheet Compiled By Brian Sams Source : http://www.sgaonline.org.au/info_companion_planting.html This great article is reproduced with permission from SGAonline. Once the realm of the hardcore, hippy, home gardener, companion planting is now an incredibly popular practice - from beginner gardeners right up to large-scale agriculture. But, despite its popularity (it's huge in Europe), companion planting is often misunderstood, misused and misrepresented as the "cure-all solution" to problems in the vegetable patch. So what is companion planting? Essentially, it's a method of growing plants together, with the idea that they will assist each other in some way, like deterring pests, improving growth, enhancing flavour, attracting beneficial insects, fixing nitrogen, disrupting "patterns" and trap cropping. But, just as we have good neighbours, there are bad neighbours as well. Some plants really dislike each other, and shouldn't be planted in close quarters, lest one of them struggle or meet its untimely demise. Mythbusters - Does it Actually Work? Now, the "Big Question": does it work? Well, yes and no. There is a fairly limited amount of actual scientific information on companion planting, but it is safe to say that some combinations do seem to work, while others can be a bit hit and miss. Why? Well, for starters, companion planting is a northern hemisphere concept that works a treat up there, but not as well down here in Australia.
- 2. Secondly, it doesn't work so well because it isn't understood. We've all heard that basil and tomatoes should be planted together, but why? How many of each is required? Is one basil per tomato enough? Who benefits? What are we deterring? Does it enhance flavour? For years, I planted one basil plant next to each of my tomatoes, and guess what? Nothing happened. There was no discernable difference in taste. Nothing seemed to be encouraged or deterred. Nothing grew better or worse than it had before, there was simply no advantage, other than me not having to walk so far to make a pasta sauce! Do you know why? Because, for basil to successfully repel flies from tomatoes, an absolute shovel-load of basil is required in your patch. I'm talking several basil plants for each tomato, and even then it won't repel fruit fly. I love basil as much as the next gardener, but I don't love it that much, and, to be honest, I've never had an issue with flies on my tomatoes. But who knew this? And how many of us think that this is the quick fix for all our garden woes? Get Your Fix - Companions that Work! Well, companion planting CAN be the quick fix, and here's how: biodiversity! The best thing about companion planting is that it increases the biodiversity of your patch; that is, the variety of life forms in your garden. Some of the greatest companion plants in my garden are those which have nothing to do with my vegetable patch, but are the awesome locally native trees and shrubs I have planted about the place. Clever planning (if I do say so myself) has meant that my garden is never without blossom, and is therefore never without the array of critters that come with that: birds, pollinating insects (like butterflies, bees, and native wasps), reptiles, beetles and all sorts of helpful garden buddies. By encouraging this assortment of good guys, my garden is almost completely without the bad guys, who never get a foothold in numbers that matter to me anyway! Remember, a lettuce leaf with a hole in it doesn't require chemical warfare, nor does it signal an attack of the dreaded munchies! So now that I've put you off companion planting all together, let me say that I reckon there are some combinations that really work, especially those that involve plants that have a fair odour to them. Also, there are definitely combinations that dislike each other, so I've made for you, dear readers, what is possibly the most comprehensive companion planting chart in the known universe.
- 3. Sustainable Gardening Australia presents: The most comprehensive companion planting chart in the known universe (maybe) Good Bad Plant How it works Neighbours Neighbours Nasturtium climbs Nasturtium, Apple tree and is said to Potatoes Chives repel codling moth Basil and tansy are Basil, Tansy, Apricot said to repel Asparagus damaging insects Basil and Parsley are Apricot, Basil, said to improve Chives, Comfrey, flavour. Onions and Asparagus Garlic, Onions Lovage, Marjoram, garlic release Parsley, Tomatoes substances reducing growth. Attracts bees, said to Balm Tomatoes enhance flavour and (Lemon) growth Basil said to repel Basil Tomatoes flies and mosquitoes Broccoli, Brussel Beetroot, Sprouts, Cabbage, Chives, Garlic, Beans Carrots, Gladiolus, (climbing) Cauliflower, Corn, Onions, Lettuce, Lovage, Sunflower Majoram, Parsley Beans (bush), Broccoli, Brussel Sprouts, Cabbage, Bad Neighbours Cauliflower, Kohl Beans roots release Beetroot Rabi, Lettuce, (Climbing), substances reducing Lovage, Marjoram, Tomato growth Onion, Peas, Potato, Spinach, Silverbeet Said to deter tomato Borage Squash, worm and improve Strawberries, tomato flavour and
- 4. Good Bad Plant How it works Neighbours Neighbours Tomato yield. Said to increase strawberry yield. Beans, Beetroot, Dill attracts a Carrots, Cabbage White Chamomile, Butterfly controlling Coriander, wasp. Nasturtium Brassicas Cucumber, Dill, disguises and repels (Incl: Lettuce, Lovage, aphids. Sage repels Garlic, Rue, Broccoli, Marjoram, the Cabbage White Strawberry, Cabbage, Marigold (French), Butterfly. Zinnias Tomato Cauliflower) Mint, Nasturtium, attract ladybirds, Pea, Potato, which we love! Bad Rosemary, Sage, Neighbours roots Tansy, Thyme, release substances Zinnias reducing growth Capsicum, Carrots, Onions, Chilli Tomato Beans, Chives, Coriander, Cucumber, Leeks, Bad Neighbours Lettuce, Lovage, roots release Carrots Dill, Celery Marjoram, Onion, substances reducing Pea, Radish, growth Rosemary, Sage, Tomato Cabbage, Chives, Dill, Dwarf Beans, Bad Neighbours Leek, Lovage, roots release Carrots, Celery Majoram, Onion, substances reducing Parsnip, Potato Pea, Sage, growth Spinach, Tomato Deters flies and mosquitoes. Chamomile Cabbage, Onion Strengthens neighbouring plants Apples, Prevents Apple Chives Cucumbers, Scab. Said to deter Beans Lettuce, Peas aphids
- 5. Good Bad Plant How it works Neighbours Neighbours Basil, Bens, Borage, Broccoli, Brussel Sprouts, Cabbage, Carrot, Cauliflower, Corn, Bad Neighbours Potato, Sage, Dill Kohl Rabi, roots release Strongly Cucumber Lettuce, Lovage, substances reducing Aromatic Marjoram, growth Herbs Nasturtium, Parsnip, Pea, Radish, Sunflower, Tansy Brassicas (Incl: Dill attracts a Broccoli, Cabbage White Dill Cabbage, Butterfly controlling Cauliflower) wasp Eggplant Beans, Spinach Apricot, Cherry, Deters aphids, Beans, Mulberry, Parsnip, especially from roses Cabbage, Garlic Peach, Pear, and raspberry. Peas, Raspberry, Repels Cabbage Strawberry Rosemary, Rose White Butterfly Kohl Rabi Beetroot, Onion Beans, Tomato Carrot, Celery, Lovage, Majoram, Beans, Peas, Leek Onion, Parsnip, Parsley Strawberry Achillea, Beans, Beetroot, Cabbage, Carrot, Chervil, Achillea, Coreopsis & Coreopsis, Zinnia attract Lettuce Cucumber, Parsley pollinators and offer Lovage, Marjoram, shade for lettuce Marigold (French), Onion, Parsnip, Pea, Radish, Strawberry, Zinnia Marigolds Numerous Kills root knot
- 6. Good Bad Plant How it works Neighbours Neighbours (French) vegetables, nematodes and eel including tomato worm Radish, Sweet Melon Corn Deters pests such as Cabbage White Mint Cabbage, Tomato Butterfly, ants and fleas Flowers repel aphids and codling moth. Cabbages, Fruit Cabbage white Nasturtium Trees, Radishes, butterfly is attracted Zucchini to this plant, and will seek it out over cabbages Beetroot, Broccoli, Cabbage, Carrot, Chamomile, Smell of onion said Leeks, Lettuce, to deter numerous Asparagus, Lovage, Marjoram, pestsOnions release Onion Beans, Parsley, Parsnip, substances reducing Gladioli, Peas Silverbeet, growth of Bad Strawberry, Neighbours Summer Savory, Tomato Said to improve Asparagus, Sweet Parsley flavour of asparagus Corn, Tomato and tomato Beans, Beetroot, Brussel Sprouts, Cabbage, Carrot, Bad Neighbours Cauliflower, roots release Celery, Cucumber, substances reducing Chives, Garlic, Peas Lettuce, Lovage, growth. Sweet Corn Onion, Shallots Marjoram, has traditionally been Parsnip, Potato, used as "living Radish, Sage, stakes" for peas Squash, Sweet Corn
- 7. Good Bad Plant How it works Neighbours Neighbours Beans, Broccoli, Brussel Sprouts, Sweet Alyssum and Cabbage, Marigolds attract Apple, Celery, Cauliflower, Corn, beneficials and Cherry, Eggplant, suppress Cucumber, Horseradish, weedsPotatoes Pumpkin, Potato Lovage, Marjoram, release substances Raspberry, Marigold (French), reducing growth of Rosemary, Nasturtium, Bad Neighbours. Squash, Parsnip, Peas, Horseradish should Sunflower, Sweet Alyssum, be planted at the Tomato Sweet Corn, corners of the patch Watermelon Beans, Cabbage, Bad Neighbours Eggplant, Peas, roots release Pumpkin Potato Radish, Sweet substances reducing Corn growth Beans, Carrot, Chervil, Cucumber, Sweet Corn, Cucumber, Radish is said to Lettuce, Lovage, Radish attract leaf miners Hyssop Marjoram, from Spinach Nasturtium, Parsnip, Pea, Spinach, Sweet Corn Blackberries, Raspberry Potato, Tomato Said to deter Beans, Cabbage, Cabbage white Rosemary Carrot, Sage butterfly. Attracts beneficials Brassicas (Incl: Broccoli, Sage repels the Sage Cabbage, Cabbage White Cucumber Cauliflower), Butterfly Carrot, Rosemary Beetroot, Cherry, Basil, Silverbeet Lavender, Lovage, Wormwood
- 8. Good Bad Plant How it works Neighbours Neighbours Marjoram, Onion Celery, Eggplant, Spinach Strawberries Borage, Lovage, Marjoram, Squash Nasturtium, Peas, Potato Sunflower, Sweet Corn, Tansy Beans, Borage, Brassicas (Incl: Chives, Leek, Broccoli, Lettuce, Marigold Cabbage, Strawberry (French), Onion, Cauliflower), Pyrethrum, Sage, Brussel Spinach Sprouts, Garlic Apricots, Sunflower Cucumbers, Beans, Potato Squash Beans, Sweet Corn has Cucumbers, traditionally been Lovage, Marjoram, used as "living Sweet Corn Melon, Parsnip, stakes" for peas. Bad Cabbage Peas, Potato, Neighbours roots Pumpkin, Radish, release substances Squash, Zucchini reducing growth Asparagus, Basil, Celery, Borage, Broccoli, Brussel Sprouts, Carrot, Marigolds said to Apricots, Cauliflower, repel white fly and Beetroot, Celery, Chives, root knot nematode. Cabbage, Dill, Gooseberry, Tomato Bad Neighbours Fennel, Kohl Grape, Hyssop, roots release Rabi, Potato, Lovage, Mariglod substances reducing Rosemary, (French), growth Sweet Corn Marjoram, Mint, Nasturtium, Onion, Parsley, Parsnip, Turnip Turnip Cucumbers,
- 9. Good Bad Plant How it works Neighbours Neighbours Lettuce, Nasturtium, Peas, Tomato Watermelon Potato When planted along pathways, is said to Most aromatic Yarrow enhance essential oil herbs production and herb flavour. Lovage, Marjoram, Zucchini Nasturtium, Sweet Corn
- 10. and... a couple of general plants that make great companions for other reasons • Basil helps repel flies and mosquitoes. • Borage in the strawberry patch will increase the yield. • Catnip repels fleas, ants and rodents. • Caraway helps breakdown heavy soils. • Chamomile deters flies and mosquitoes and gives strength to any plant growing nearby. • Chives grown beneath apple trees will help to prevent apple scab; beneath roses will keep away aphids and blackspot. • Elderberry a general insecticide, the leaves encourage compost fermentation, the flowers and berries make lovely wine! • Fennel (not F. vulgare or F.officionale) repels flies, fleas and ants. • French Marigold root secretions kill nematodes in the soil. Will repel white fly amongst tomatoes. • Garlic helps keep aphids away from roses. • Hyssop attracts cabbage white moth keeping brassicas free from infestation. • Mint repels cabbage white moth. Dried and placed with clothes will repel clothes moth. • Nasturtium secrete a mustard oil, which many insects find attractive and will seek out, particularly the cabbage white moth. Alternatively, the flowers repel aphids and the cucumber beetle. The climbing variety grown up apple trees will repel codling moth. • Pyrethrum will repel bugs if grown around the vegetable garden. • Rosemary repels carrot fly. • Rue (Rutus, not Peganum) keeps cats and dogs off garden beds if planted round the borders. • Sage protects cabbages from cabbage white moth. • Tansy (Tanacetum, not Senecio) repels moths, flies and ants. Plant beneath peach trees to repel harmful flying insects. Tansy leaves assist compost fermentation. • Wormwood (Artemesia, not Ambrosia) although it can inhibit the growth of plants near it, wormwood does repel moths, flies and fleas and keeps animals off the garden.