Companion Planting - Footprint Trust, Isle of Wight, United Kingdom

1. Companion Planting
The improvement in growth or flavour is probably due to the companion
plant adding some of the micro-nutrients or the roots may support
micro-organisms such as mycorrhizal fungi which improve their uptake.
In the case of legumes they fix nitrogen, and White Clover is included
in some grass seed mixes, for this reason - it is also drought resistant
so 'greens up' quicker than grass when used in lawns.
• Some plants exude protective chemicals called
allelochemicals from their roots or foliage, which can
deter pests, e.g. African Marigolds produce thiopene
which repels nematodes so it makes a good companion
plant for root crops which are attacked by nematodes.
• Beneficial insects can be attracted to a cropping area by
planting something which they use as a food nearby, e.g.
adult Hover Flies feed on nectar, but their larvae feed on
aphids so planting nectar-rich flowering plants will attract
them and they will lay their eggs on plants where there
are pests.
Based on information provided by www.dgsgardening.btinternet.co.uk
Good
Plant Bad Companions
Companions
Asparagus Tomato, Basil, Potatoes
Parsley
Beans Carrots, Leeks, Chives, Garlic,
Cabbage, Onions
Cucumber,
Cauliflower
Broad Potatoes, Lettuce Fennel
Beans
Dwarf Beetroot
Beans
Beetroot Kohlrabi, Dwarf Runner/Climbing
Beans, Onions, Beans, Lettuce,
Chives Cabbage,
Broccoli Dill, Celery, Tomatoes,
Chamomile, Strawberries, Oregano
Sage, Rosemary
Brussel Potatoes, Sage, Strawberries,
Sprouts Hyssop, Thyme Rosemary

2. Good
Plant Bad Companions
Companions
Cabbage Beetroot, Tomatoes, Garlic,
Potatoes, Beans, Strawberries, Celery,
Onions, Sage Dill,
Mint, Thyme, Oregano
Capsicum Basil
Carrots Leeks, Lettuce, Dill, Parsnip, Chives,
Onions, Peas, Sage, Rosemary,
Tomatoes Radish
Cauliflower Celery, Celeriac, Strawberries, Rue,
Beans, Oregano Peas, Potato,
Nasturtium
Celery Leeks, Beans, Parsnip, Potato,
Cabbage, Wheat
Tomatoes
Corn Melons, Squash,
Pumpkins,
Cucumbers,
Potatoes,
Parsnips,
Artichokes,
Jerusalem
Artichokes
Cucumber Beans, Peas, Potatoes, Sage,
Radish, Celery, Cauliflower, Basil
Carrots
Chives Carrots,
Tomatoes,
Parsley,
Parsnips, Fruit
Trees
Eggplant Beans, Potato,
(Aubergine) Marjoram
Horseradish Potatoes, Fruit
Trees
Kohlrabi Beetroot, Onion, Pole Beans,
Dwarf Beans Tomatoes, Cucumber
Leeks Carrots, Celery,
Celeriac,
Strawberries
Lettuce Strawberries, Parsley, Beans,
Cabbage, Beetroot, Parsnip
Carrots, Onions

3. Good
Plant Bad Companions
Companions
Nasturtium Cabbage, Broccoli, Brussel
Cauliflower, Sprouts, Potato,
Cucumber Radish, Squash,
Zucchini, Fruit Trees
Onions Cabbage, Beans, Peas, Parsnip,
Carrots, Parsley, Leeks
Beetroot, Lettuce
Potato Beans, Corn, Pumpkin, Squash,
Cabbage, Cucumber, Dill,
Horseradish Eggplant, Tomatoes,
Raspberries
Peas Carrot, Corn, Onions, Garlic, Shallot
Cucumber,
Beans, Radish
Pumpkin Sweetcorn, Potato
Marjoram
Radish Cucumber, Hyssop, Squash,
Lettuce Peas, Nasturtium
Spinach Broad Beans,
Strawberries,
Fruit Trees
Tomato Asparagus, Basil, Beetroot, Fennel,
Lima Beans, Kohlrabi, Broccoli,
Cabbage Brussel
Sprouts, Cauliflower,
Potato, Rosemary,
Carrots, Chives, Dill,
Onions, Parsley,
Parsnip, Nasturtium
S = Seed sowing
T = Transplant
Notes:
(1) This table is a guide only, please observe the seasonal weather patterns
before deciding when to plant, as there will often be distinct differences in
summer weather from one year to the next.
(2) Planting times will vary for different varieties of the one vegetable.
Thanks to Canberra Organic Growers’ Society Inc. 1995, Canberra Organic Growers’
Society Inc
Information provided by …. http://organicgarden.org.uk