United States / Grow / Madrones

Madrones Arbutus

This hub compares 3 species records. Across all 4 records, it carries 220 evidence rows from 39 distinct cited sources. The species split is 1 in documented conflict and 2 awaiting directional evidence. 1 genus-rank record is shown separately; genus-rank claims do not override a species record, and species evidence does not become one verdict for the genus.

Rated as a group: madrone Arbutus Awaiting evidence Limited evidence 1 source rate the genus as a whole. Species evidence never rolls upward into a genus verdict, and genus claims never override a species record. ›

Documented conflict: 1 species

honest ties — treat conservatively near structures

strawberry tree Documented conflict Arbutus unedo Valencia's low-flammability guide says low · The ignition index based on flammability of vegetation im… says high genus-level claims ↑

Awaiting evidence: 2 species

About madrones

Directory notes

Plant forms recorded in this group: shrub, tree. The records span published USDA zones 8–8. These are record-level fields, not a whole-genus flammability claim.

More about Arbutus: Wikipedia — external references; not evidence sources.

Where rated madrones grow

Tagged as growing in 4 states.

Equal-weight public-domain botanical specimens compare greenleaf manzanita with Pacific madrone. A shared height axis shows the three-to-seven-foot shrub range against the sixteen-to-one-hundred-thirty-foot tree range. — **FA Exhibit ID-006.** Manzanita or madrone: red bark, different scale. Morphology from USFS FEIS ARCPAT and ARBMEN. Plates: USDA Agriculture Handbook 148, p. 190, and Sudworth 1908, fig. 200, public domain. Identification only — no flammability claim. Confirm uncertain material with a regional key or a botanist. CC BY 4.0.

See Arbutus on Grow → · JSON