A plant that must climb needs an assigned support strong enough to carry it.
Well established A person has checked it against its sources. If you skip this, the planting fails. The planner won’t allow it.
How it works
Mechanical. Unsupported pole beans sprawl, rot, and yield poorly.
What to do about it
Assign a strong support (a trellis or cattle panel), or choose a bush cultivar group.
The evidence
Evidence: checked against 2 sources in the research-based literature.
The 2 sources
Pole beans are twining vines growing up to six feet and sometimes taller that you must support with a trellis or similar structure.
Pole beans will require sturdy supports at least 6 feet tall.
Read next
How this rule has changed
Every change is dated, newest first. The full record, with each reason, is in the data download.
- A person read the sources and confirmed it
- Details updated
- Wording made clearer
- Details updated
- Added to the rules
Cite this page
Milpa Gardens. "A plant that must climb needs an assigned support strong enough to carry it." Evidence grade: Well established. https://milpa.garden/rules/plant-that-climb-needs-assigned-support-strong/
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.