Ability to Respond Total:13 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Increases rapidly, doubling in less than 10 years (Cal-IPC).
4
Spread Amount
Ranges along the entire CA coast and some mesic areas of the Central Valley. Over 500,000 acres are infested in CA, and on Catalina Island, 13 populations were detected (Cal-IPC).
3
Damage
Notes
Score
Ecological
Formation of stands dominated (>75% cover) by this species. Severe alteration of plant community composition and structure. Toxic to wildlife. (Cal-IPC)
5
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
12
Ability to Respond
Ease of Response
Notes
Score
Detection
Fairly apparent when infestations get large and are in accessible areas, but new populations or remote populations not easy to spot.
3
Control
Repeated control necessary. Breaks easily and can be spread vegetatively from small fragments (Cal-IPC).
2
Tools in Place
Notes
Score
Entry
CDFA "B" listing, making quarantine a local decision.
3
Control
CDFA "B" listing, Cal-IPC Inventory.
3
Outreach
Fairly well known through Cal-IPC listing and Don't Plant a Pest brochures, and PlantRight program.
