Two guides from SowSeeds that may be of interest to members:

Crop rotation is the process of growing vegetables in their respective families and moving the families around a plot in a specific sequence so they are not grown on the same piece of land for at least 3 years.

Companion planting is an organic method of maintaining a natural balance in your garden, aiding pollination and keeping pest numbers down.  Most companion plants are strongly scented and confuse pests looking for their host plant.

Crop rotation and Companion Planting Guides