Reference
How to Rotate Crops in Your Vegetable Garden
The short answer
Crop rotation means not planting vegetables from the same botanical family in the same spot year after year. Plants in one family (say tomatoes, peppers, and potatoes) share the same pests, diseases, and nutrient demands — so moving them each season stops those problems from building up in the soil and keeps fertility more even.
The rule of thumb: wait 3-4 years (longer if you can) before a family returns to the same bed. The easy way to do it is to group your crops by family, give each group a bed, and rotate the groups around your beds each year — keeping a simple map or photo so you remember.
Why family matters
Rotation works at the family level because related crops are vulnerable to the same soil-borne diseases and insects and draw on the same nutrients. Rotating breaks pest and disease cycles and prevents any one nutrient from being repeatedly stripped from the same spot. The main vegetable families: nightshades (tomato, pepper, potato, eggplant), brassicas/cole crops (cabbage, broccoli, kale, radish, turnip), cucurbits (squash, cucumber, melon, pumpkin), legumes (beans, peas), alliums (onion, garlic, leek), and root crops (carrot, beet).
How to plan it
- 1Group by family — List your crops and sort them into their botanical families.
- 2Give each group a bed — Plant each family together in its own bed or section.
- 3Rotate each year — Move each family to a different bed next season; don't return a family to a bed for 3-4 years.
- 4Keep a record — Draw a map, keep a log, or snap a photo each year so you remember what grew where.
✔ A common flow: root crops → legumes → leafy crops → fruiting crops, then back around. Legumes leave nitrogen behind for the leafy crops that follow.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Iowa State University Extension — Crop Rotation in the Vegetable Garden — Rotate so vegetables of the same family are not grown in the same location for 3-4 years to reduce pests and diseases and manage soil fertility; group crops by family and rotate beds.
- University of Wisconsin-Madison Extension — Using Crop Rotation in the Home Vegetable Garden — Crops in the same family share pests, diseases, and nutrient needs; rotating families among beds over several years limits their buildup.