How do I plan crop rotation over several years?

Let Heirloom remember what grew in each bed, season after season, and rotation stops being a memory exercise. On the Crop Map, click Block informations and pick a block: Crop families history lists, season by season, the families that grew in each bed.

Set how long each family stays away from a bed with its Rotation cycle in years, in Farm data > Crop families: four years for garlic and onions, every season for lettuce, or what suits your farm. Turn on Display by crop family color in Options, and two brassicas that follow each other in a bed stand out.

The steps are in Check your crop rotation.