Companion plant to crop ratios / equations? Do they exist?

Hi foks,

An odd question has been nagging me for years but ive never got around to asking advice:

Is there a standard way of calculating how many companion plants (per square metre) are required for effective protection against pests? For example, fo

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Companion Planting in practice

Hi everyone! I'm a newbie gardener in the process of planning a vege garden and am very keen to use companion planting as I really don't want to use chemicals on our food. I saw one design that had comfrey planted in a raised bed under a blackberry -

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Tomatoes and friends

Has anyone found a successful companion for tomatoes?

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