Ability to Respond Total:14 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Populations can spread quickly
5
Spread Amount
Occupies a variety of habitats in California
4
Damage
Notes
Score
Ecological
Forms dense stands, can increase fuel loads, out competes and grows taller than many native broadleaves.
4
Agricultural
A minor weed of rangelands, grows well is disturbed areas, can reduce yields as it outcompetes more palatable species.
2
Infrastructure
Is often a common roadside weed in Southern California. Infestations can require addition work for roadside managers to meet management goals
2
Cultural
0
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
17
Ability to Respond
Ease of Response
Notes
Score
Detection
Moderately difficult to detect during winter as it grows a low growing rosette, usually under taller grasses or forbs. When flowering it can be easier to detect.
3
Control
Plant can be controlled with standard methods, seeds can be long lived (approx. 4 years) so populations are difficult to eliminate
3
Tools in Place
Notes
Score
Entry
On 4500 noxious weed list
5
Control
Widespread in CA, not often controlled
2
Outreach
Minor outreach, as populations are expanding in Southern California
