Crop rotation for the home garden
Last reviewed September 2026 · written from public-domain USDA/NOAA data and Cooperative Extension references — see how we source data
Rotation means not growing the same family of vegetables in the same soil two years running. It breaks pest and disease cycles and evens out how nutrients are used.
Why it works
Many soil-borne diseases and overwintering pests are family-specific: club root in brassicas, early blight in the tomato family, onion white rot. Moving the family away for a few years starves those organisms of a host.
Different families also draw on the soil differently. Leafy crops are nitrogen-hungry; root crops want less nitrogen and more phosphorus and potassium; legumes add nitrogen back.
Group by family
Nightshades: tomato, pepper, eggplant, potato. Brassicas: broccoli, cabbage, kale, cauliflower, radish, turnip, arugula. Cucurbits: cucumber, squash, pumpkin, melon. Legumes: peas and beans. Alliums: onion, garlic, leek. Umbellifers: carrot, parsley, dill, cilantro. Chenopods: beet, chard, spinach.
A simple plan
A four-group cycle that fits most gardens: legumes → leafy/brassicas → nightshades and cucurbits (heavy feeders) → roots and alliums, then back to legumes. Each bed moves one step along each year.
In a very small garden, even a two-year "family A / family B" swap is far better than nothing. Keeping a quick map of what grew where each year is the only real work. A cover crop in the off season is a natural fit between rotations.
A four-year rotation across four beds
| Bed A | Bed B | Bed C | Bed D | |
|---|---|---|---|---|
| Year 1 | Legumes | Leafy & brassicas | Fruiting crops | Roots & alliums |
| Year 2 | Leafy & brassicas | Fruiting crops | Roots & alliums | Legumes |
| Year 3 | Fruiting crops | Roots & alliums | Legumes | Leafy & brassicas |
| Year 4 | Roots & alliums | Legumes | Leafy & brassicas | Fruiting crops |
Legumes: bush bean, pole bean, pea, edamame, fava bean, lima bean
Leafy & brassicas: lettuce, spinach, kale, swiss chard, broccoli, cauliflower
Fruiting crops: tomato, bell pepper, chili pepper, cucumber, zucchini, winter squash
Roots & alliums: carrot, onion, garlic, leek, celery, green onion
Rotating in raised beds and small gardens
With four beds the plan runs itself: each bed takes the next group every year. With one or two beds, divide each into halves or quarters and rotate the groups around the sections - it is a smaller move, but it still keeps a family out of the same soil for a few years.
Containers are the easy case. Refresh or replace the potting mix each spring instead of rotating, and never reuse mix from a plant that had a soil-borne disease.
How long a break each family needs
Three to four years away is the usual target, and it matters most for the tomato and cabbage families, whose soil-borne diseases linger longest. Onions, garlic and leeks are also worth moving every year because onion white rot persists in soil for many years once it arrives.
Some problems outlast any home rotation: clubroot spores in brassica beds survive for well over a decade. If you have it, raise the soil pH toward 7.2 with lime, choose resistant varieties and grow brassicas in fresh soil elsewhere - see soil pH and testing.
What rotation will not fix
Rotation works on problems that live in the soil. It does little against pests that fly in, such as aphids and cabbage moths, or diseases that arrive on the wind, like late blight and powdery mildew. For those, use row cover, resistant varieties and good spacing - see aphids and powdery mildew.
Clearing diseased plant debris in fall does as much as rotation for diseases like early blight that overwinter on old leaves and stems.
Keep a simple record
A midsummer photo of each bed, or a sketch in a notebook, is all it takes. Next spring you only need to know which group was where. The garden bed planner flags when you put a crop back into a bed its family used recently.
Common questions
Do I really need crop rotation in a small garden?
It helps even in a small space, though the benefit is smaller because diseases spread a few feet easily. Moving each family to a different bed or section each year, and clearing diseased debris, prevents most of the build-up that makes tomatoes and brassicas decline year after year.
Can I plant tomatoes in the same spot every year?
It is best not to. Early blight and fusarium build up in the soil. If you have no alternative, clear all plant debris each fall, mulch to stop soil splashing onto the leaves, choose resistant varieties, or grow tomatoes in large containers with fresh mix.
What should I plant after tomatoes?
In the four-group plan, root crops and onions follow tomatoes, and beans or peas come the year after. Avoid potatoes, peppers and eggplant in that spot - they are in the tomato family and share its diseases.
Do beans really add nitrogen to the soil?
Beans and peas host bacteria in root nodules that fix nitrogen from the air. Most of it goes into the crop itself, so the benefit to the next crop is modest unless you cut the plants at the soil and leave the roots to rot in place.