A bulb ring suppresses turfgrass competition at a fruit tree trunk.
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
Resource competition and physical occupancy of the root collar zone.
The evidence
Evidence: checked against 3 sources in the research-based literature.
The 3 sources
… delayed the onset of fruiting and reduced vegetative growth compared to trees surrounded by an area that had been kept vegetation-free with mulch, cultivation, or herbicides
Young fruit trees have difficulty competing with grass and weeds for water and nutrients.
Proper mulching provides a well-groomed appearance, eliminates grass or weed competition and prevents damage from mowers and weed trimmers.
Plant teams that rest on it
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How this rule has changed
Every change is dated, newest first. The full record, with each reason, is in the data download.
- Sources updated
- Details updated
- A person read the sources and confirmed it
- Details updated
- Details updated
- Added to the rules
Plan a bed with Fruit tree ring ›
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Cite this page
Milpa Gardens. “A bulb ring suppresses turfgrass competition at a fruit tree trunk.” Evidence grade: A good hunch. https://milpa.garden/rules/bulb-ring-suppresses-turfgrass-competition-fruit-tree/
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.
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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.