Alliums and carrot family are unrelated to nightshades/cucurbits/brassicas and can break those families' rotation cycles
Alliums and carrot family are unrelated to nightshades/cucurbits/brassicas and can break those families' rotation cycles. They are still not "low-pressure" and need their own rotation.
As recorded: Alliums and Apiaceae are unrelated to Solanaceae/Cucurbitaceae/Brassicaceae and can break those families' rotation cycles. They are still not "low-pressure" and need their own rotation.
A good hunch A person has checked it against its sources. If you skip this, it still grows, just less well. The planner suggests it.
How it works
They host none of the big-three families' soilborne pathogens, so following those crops with an allium or apiaceous crop breaks the host cycle. They are not inherently low-pressure, though. Allium white rot (Sclerotium cepivorum) is allium-specific, its sclerotia persist 15+ years, and it cannot be eradicated once established; apiaceous crops carry their own soilborne diseases.
The evidence
Evidence: checked against 1 source in the research-based literature.
The source
Plants it applies to · 14
Onions & garlic · 5, Herbs · 5, Roots & tubers · 2, Salad & greens · 1, Flowers · 1
Salad & greens · 1
Flowers · 1
Plant teams that rest on it
Folklore it answers
Read next
How this rule has changed
Every change is dated, newest first. The full record, with each reason, is in the data download.
- Sources updated
- Wording made clearer
- Sources updated
- A person read the sources and confirmed it
- Added to the rules
Plan a bed with Rotation break ›
You must rotate every crop to new ground every single year. · What can I plant now?
More ways Milpa can help
When do I plant? · What grows well together? · Plan my garden · What can I plant now? · Something wrong in the garden? · Keep a garden diary · Heard a tip?
Cite this page
Milpa Gardens. “Alliums and carrot family are unrelated to nightshades/cucurbits/brassicas and can break those families' rotation cycles. They are still not "low-pressure" and need their own rotation.” Evidence grade: A good hunch. https://milpa.garden/rules/alliums-carrot-family-unrelated-nightshades-cucurbits-brassicas/
A garden planner built on graded evidence. Every claim states its evidence grade and links its sources on the page. Cite it with the grade, and add the date you read it.
Report a problem with this claim
How we grade evidence
- Well established
- The rule names its mechanism and is settled, by sources a person has read and checked or by plain arithmetic and geometry.
- Promising
- The mechanism is named and the literature backs it. A few questions are still open.
- A good hunch
- Plausible by its mechanism, but field studies are thin, so treat it as a lean.
- Contested
- The evidence points both ways, or no study has tested it, so the planner does not enforce it.
- Refuted
- The claim did not survive its sources. It is kept so the folklore can be answered.