Planning: Companion Planting

I found a great website on companion planting. There I found advice about getting started with planning our vegetable garden. The website instructed to divide into five or more sections to make sure to be able to accommodate all the necessary plant families (see below). According to these categorizations, I have to plan out which crops to grow and where they will be planted. The site indicated that the plants should be divided into a plant family group, determined by sharing the same pest and diseases, then into soil requirements. In thinking about gardening in the same spot for more than one year, I found that you have to anticipate the rotation of the plants. The recommendation from Companion Planting is below:

Year one: as below
Year two: legumes, onions, potato family, umbellifers, brassicas
Year three: onions, potato family, umbellifers, brassicas, legumes
Year four: potato family, umbellifers, brassicas, legumes, onions
Year five: umbellifers, brassicas, legumes, onions, potato family

Family	Examples	Soil Requirements	Soil Benefit
Brassicas	Cabbage, Cauliflower, Radish, Swede	Leafy crops need nitrogen-rich soil may need liming
Legumes	Pea, all beans, Broad, French, Runner	Well-drained but moisture-retentive; non nitrogen-rich	Will fix atmospheric nitrogen in for future crops
Onions	Onions, Garlic, Shallots, Leeks	High Organic matter may need liming
Potato	Potato, Tomato	High organic matter and nitrogen no lime structure	Suppresses weeds, breaks up soil
Umbrellifers	Carrot, Parsnip, Parsley, Celery, Florence fennel	Root crops need stone free soil, not freshly manured fine tilth	root crops brake up soil structure

Some plants have very few soil dwelling pest or diseases that they can be planted anywhere within the rotation like cucumbers, endives, fennel, french beans, lettuces, peppers, pumpkins, runner beans, squashes, and sweet corn.

I also found a great list of companion plants from the National Sustainable Agriculture Information Service.

Crop	Companions	Incompatible
Asparagus	Tomato, Parsley, Basil
Beans	Most Vegetables & Herbs
Beans, Bush	Irish Potato, Cucumber, Corn, Strawberry, Celery, Summer Savory	Onion
Beans, Pole	Corn, Summer Savory, Radish	Onion, Beets, Kohlrabi, Sunflower
Cabbage Family	Aromatic Herbs, Celery, Beets, Onion Family, Chamomile, Spinach, Chard	Dill, Strawberries, Pole Beans, Tomato
Carrots	English Pea, Lettuce, Rosemary, Onion Family, Sage, Tomato	Dill
Celery	Onion & Cabbage Families, Tomato, Bush Beans, Nasturtium
Corn	Irish Potato, Beans, English Pea, Pumpkin, Cucumber, Squash	Tomato
Cucumber	Beans, Corn, English Pea, Sunflowers, Radish	Irish Potato, Aromatic Herbs
Lettuce	Carrot, Radish, Strawberry, Cucumber
Onion Family	Beets, Carrot, Lettuce, Cabbage Family, Summer Savory	Beans, English Peas
Pea, English	Carrots, Radish, Turnip, Cucumber, Corn, Beans	Onion Family, Gladiolus, Irish Potato
Potato, Irish	Beans, Corn, Cabbage Family, Marigolds, Horseradish	Pumpkin, Squash, Tomato, Cucumber, Sunflower
Pumpkins	Corn, Marigold	Irish Potato
Radish	English Pea, Nasturtium, Lettuce, Cucumber	Hyssop
Spinach	Strawberry, Faba Bean
Squash	Nasturtium, Corn, Marigold	Irish Potato
Tomato	Onion Family, Nasturtium, Marigold, Asparagus, Carrot, Parsley, Cucumber	Irish Potato, Fennel, Cabbage Family

Equipped with all this information, I think I can begin planning out what plants we should grow and how we should start to organize them. Next considerations include what type of garden layout we want. More on the "garden map" or layout next time!

NOTE: I'm not sure if you noticed, but these tables are looking a lot better than my previous tables. I finally found a way to get tables nicely into Blogger!