Plan a new spot for a plant family next year

Problems such as soil-borne diseases can live on in the soil and old plant debris. Growing one plant family in the same spot year after year lets them build up; moving the family for a few years lets them die down.

When we suggest this

• Your noteA plant family that needs rotating grew in the same spot this season and within its rotation interval before (tomato family: 3 years; cabbage family: 3 years; squash family: 3 years; onion family: 4 years), from your plants' locations and your answers; or you noted disease on it this season.
• Climate averageThe date falls from 45 days before your typical first fall frost to 120 days after your typical first fall frost, based on 1991–2020 climate normals (fall and winter planning).

What would stop us suggesting it

• When you note a new stage, or the timing window ends.
• When you mark it Done or Doesn't apply. "Doesn't fit my setup" stops it for that plant this season.

What to do

1. Next year, plant those plants and the rest of the plant family somewhere other than that spot.
2. Keep the plant family out of that spot until a few years have passed.
3. In that spot next year, grow a different family, such as beans or peas, or sow a cover crop this fall.
4. Short on space? Grow them in large containers with fresh potting mix, and choose disease-resistant varieties.

What we can't know

• Where these plants grew in earlier years, if you haven't told us.

Sources give 2–4 years for most families (4 for onions and garlic). Rotation helps most against problems that stay in the soil or plant debris; it does little against wind-blown diseases, and a few (such as white rot of onions or clubroot of cabbage) last longer than any practical rotation. At home-garden scale the benefit is real but modest, so resistant varieties and cleanup matter too.

Where this advice applies

All US regions.

Any US garden with annual vegetables, planning in fall and winter.

Engine: history comes from plants' location notes and planting years plus the gardener's check-in answers about past seasons. A 3-year rotation means the family returns to a spot every third year.

Exceptions

• Families that need rotating less (lettuce, beets, carrots, herbs, corn), perennials, and trees.
• Spots where the family grew only this season, unless you noted disease there.
• Containers: use fresh potting mix instead of moving them.

Reviewed

Sources checked Sept 2026 · awaiting expert review

Gardenplanner research (AI-assisted), pending extension-qualified review

Rule id and version: general.rotation@1