Ability to Respond Total:9 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Can spread rapidly in riparian areas, flood plains, grasslands, roadsides, fencerows, seasonally moist pastures, ditches, and other disturbed sites (DITomaso).
3
Spread Amount
Present in Inyo, Tulare, and San Diego Counties, San Joaquin Valley, San Francisco Bay region, eastern Sierra Nevada, and Mojave Desert. Not spreading as fast in CA as in southwestern states (Cal-IPC).
3
Damage
Notes
Score
Ecological
Alters nutrient cycling and system hydrology, eventually changes riparian sites into dry uplands. Dense thickets can increase fuel loads for wildfire. Forms dense monocultures, alters the course of plant succession (shades cottonwood seedlings) (Cal-IPC).
4
Agricultural
0
Infrastructure
0
Cultural
0
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
Ornamental tree, until recently was recommended for windbreaks by NRCS and other agencies (Cal-IPC)
2
Infrastructure
0
Cultural
0
Health
0
Total
8
Ability to Respond
Ease of Response
Notes
Score
Detection
Easy to detect
5
Control
Seedlings can be handpulled. Mature plants can be controlled using the cut-stump method (Cal-IPC)
2
Tools in Place
Notes
Score
Entry
0
Control
0
Outreach
On Cal-IPC list and included in Don't Plant a Pest brochure.
