Crop rotation in a small garden: a workable four-family plan
Group crops by botanical family, map where each group grew and move the groups—not individual vegetables—as space allows next season.
Answer first
In a small garden, perfect rotation is rarely possible. Use four practical groups—nightshades, brassicas, alliums and legumes—then treat roots, salads and permanent crops according to their own space. Move the highest-risk family away from its previous bed first, keep records, and combine rotation with sanitation, resistant varieties and good soil care.
Rotate families, not names
Tomato and potato are both nightshades; cabbage, kale and broccoli are all brassicas. Moving tomato into last year's potato bed is not a meaningful family rotation. Use the family field in each Garden Dream crop page to build the map.
A useful four-group core is nightshades, brassicas, alliums and legumes. Fit carrots, beetroot, salads and herbs around it based on the disease history and how much space they actually occupy.
- Nightshades: tomato, pepper, potato and aubergine.
- Brassicas: cabbage, kale, broccoli, cauliflower, radish and kohlrabi.
- Alliums: onion, garlic, leek and chives.
- Legumes: peas, beans and broad beans.
- Permanent crops: asparagus, rhubarb, berries and fruit trees stay outside the annual rotation.
Prioritize the real problem
If one bed had a diagnosed soil-borne disease, moving that host family has priority over making every bed follow a decorative sequence. Some problems require a longer exclusion period or professional/local advice; a generic four-year diagram is not enough.
Rotation has limited power against airborne disease and does not compensate for infected transplants, poor drainage or overcrowding. Use it as one layer.
Make next year visible
Draw each bed in the Garden Dream planner and label the dominant family grown this year. Duplicate the plan, move each group to the next workable bed, then check spacing, light and companion conflicts. Keep a note where a family cannot move.
After harvest, record actual disease and yield rather than relying on memory. A slightly imperfect rotation with a truthful record is stronger than a perfect diagram that ignores what was planted.
Useful next actions
Sources and method
- Promote healthy soil in your garden — University of Minnesota Extension
- Managing plant diseases in the home garden — University of Minnesota Extension
Read how Garden Dream calculations and editorial review work.
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