Ability to Respond Total:16 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Rapid spread rate. Total area infested in state is fairly stable (Cal-IPC).
3
Spread Amount
North Coast, western North Coast Ranges, northern and central Sierra Nevada foothills, San Francisco Bay region, and very rarely in the eastern South Coast Ranges, South Coast, and Peninsular Ranges, to 400m (DiTomaso).
3
Damage
Notes
Score
Ecological
Forms impenetrable thickets excluding desireable native vegetation and impeding movement of wildlife. Impacts oil chemistry, fire frequency, fire intensity (Cal-IPC).
4
Agricultural
0
Infrastructure
3
Cultural
0
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
Used by honeybees (Cal-IPC).
1
Infrastructure
0
Cultural
0
Health
0
Total
12
Ability to Respond
Ease of Response
Notes
Score
Detection
Easy to detect
5
Control
Labor intensive, requires repeated removal and monitoring to completely purge the seedbank (DiTomaso).
3
Tools in Place
Notes
Score
Entry
CDFA B listed plant.
3
Control
Soem biological control effort and effort on local level, as this is a CDFA B listed plant.