Ability to Respond Total:15 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Infests riparian areas, limited in CA. Spreads rapidly. In good conditions able to germinate in June, grower to 5-ft tall with mature seed pods in Oct. of the same year; b) floating seed pods can disperse long distances rapidly (Vince Guise, pers comm).
5
Spread Amount
A recent invader that has spread in the Central Valley since 1999 (unknown). A serious pest in riparian areas diplacing natives and creating a monoculture. Documented to have occurred in South Africa and southeastern U.S. rapidly (Vince Guise, pers comm).
3
Damage
Notes
Score
Ecological
Damage to natural riparian areas (Vince Guise, pers comm). Rated high in the Cal-IPC Inventory.
4
Agricultural
Forms dense thickets along riverbanks, excluding native species. Plants poisonous to wildlife.
3
Infrastructure
2
Cultural
Increases hydraulic roughness of rivers where established, may increase flood severity. Toxic to livestock.
2
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Total
19
Ability to Respond
Ease of Response
Notes
Score
Detection
Relatively easy to detect especially when in flower and when dormant with it's distinctive seed pods that persist on the tree potential (Vince Guise, pers comm).
3
Control
Though it is not particularly easy to control and the seed has a long longevity, it is controlled with eradication as a goal by some WMA's or county ag departments through hand removal and/or cut/stump treatment (Vince Guise, pers comm)."
