Rotate your crops
The most impressive crop rotation regime I’ve ever seen is at Hampton Court, which involves 12 areas of the garden, each containing a different group of vegetables. My own regime is simpler, using only three areas! So why rotate crops? There are two main reasons, the first being to reduce pest and disease problems. These tend to target one group of veg. For example, clubroot in brassicas can contaminate soil for many years. It needs brassicas to live, so if they aren’t grown in the contaminated soil, the clubroot will die and the soil becomes clean. The more groups of veg in your rotation, the longer it takes before each group is exposed to disease again. The second reason is to improve the soil’s fertility, maintaining a balance of nutrients for specific types of crops. I plant legumes first, which enrich the soil with nitrogen. Brassicas then use that nitrogen and root veg follows, aerating the soil as the roots grow into it and are then dug out. After that, it’s back to legumes.