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Buckthorns Frangula

Every rated Frangula record is fire-resistant — 1 of 3 records; none is condemned. These counts describe the cited records — 3 records carrying 7 evidence rows from 6 cited sources; they do not make one verdict for the genus.

Fire-resistant

1 species

Cascara Fire-resistant Frangula purshiana Consensus · 5 sources Zones 3–8

Awaiting evidence

2 species

Coﬀee berry (CA buckthorn) Awaiting evidence Frangula californica Limited evidence · 1 source
Frangula alnus Awaiting evidence Frangula alnus Limited evidence · 1 source Zones 3–3

About buckthorns

Corpus context. Frangula is the directory's #293 largest of 550 genus groups: 3 records carrying 7 evidence rows from 6 cited sources, recorded as shrub, tree , hardy across USDA zones 3–8. Those are corpus facts, not a whole-genus flammability claim.

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

Where rated buckthorns grow

Tagged as growing in 33 states.

See Frangula on Grow → · JSON