United States / Grow / Buckthorns

Buckthorns Rhamnus

This hub compares 5 species records. Across all 6 records, it carries 60 evidence rows from 20 distinct cited sources. The species split is 2 fire-resistant, 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: buckthorn Rhamnus spp. Fire-resistant Consensus 4 sources rate the genus as a whole. Species evidence never rolls upward into a genus verdict, and genus claims never override a species record. ›

Fire-resistant: 2 species

Documented conflict: 1 species

honest ties — treat conservatively near structures

Italian buckthorn Documented conflict Rhamnus alaternus Landscape for Fire Protection says low · The fire risk of the plant groupings with Cistus in the a… says high genus-level claims ↑

Awaiting evidence: 2 species

About buckthorns

Directory notes

Plant forms recorded in this group: shrub, tree. The records span published USDA zones 2–7. These are record-level fields, not a whole-genus flammability claim.

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

Where rated buckthorns grow

Tagged as growing in 41 states.

See Rhamnus on Grow → · JSON