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Jacob's-ladders Polemonium

Every rated Polemonium record is fire-resistant — 2 of 3 records, including the genus rated as a group; none is condemned. These counts describe the cited records — 3 records carrying 10 evidence rows from 8 cited sources; they do not make one verdict for the genus.

Rated as a group: Jacob’s ladder Polemonium Fire-resistant Consensus 8 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

1 species

Awaiting evidence

1 species

About jacob's-ladders

Corpus context. Polemonium is the directory's #344 largest of 550 genus groups: 3 records carrying 10 evidence rows from 8 cited sources, recorded as perennial , hardy across USDA zones 3–8. Those are corpus facts, not a whole-genus flammability claim.

Where rated jacob's-ladders grow

Tagged as growing in 36 states.

See Polemonium on Grow → · JSON