Land Plants - non-native

Knapweed (species unknown) (Centaurea) on Jul 8, 2019

Submitter does not have a specimen
EDRR Status: Local expert notified

Description of specimen

Knapweed is rampant on empty lot and is infesting neighboring lots.

Commentary

None

Resources

There are many non-native knapweeds present in Oregon, and their identification can be difficult. Some species hybridize. Here is one resource for identification: Identification of starthistles and knapweeds in the Pacific Northwest, but there may be more recent descriptions available.

Location

An empty lot in Northwest Crossing is not maintained by owners (Nye family) and knapweed is RAMPANT and infesting neighboring lots.

Expert Reviewer

Mr. Ed Keith

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