Ability to Respond Total:20 / 25Ability to Respond = ( Ease of Response + Tools in Place )
Confidence:High
Confidence Notes:
Impact
Spread
Notes
Score
Spread Rate
Usually introduced and spread intentionally by humans but can be spread by birds and squirrels. Japanese dodder can spread vegetatively up to six inches per day.
3
Spread Amount
Very large host range from herbaceous plants and shrubs to trees
4
Damage
Notes
Score
Ecological
Very wide host range includes California native plants and riparian areas
5
Agricultural
Can be a problem with many perennial crops, especially citrus.
3
Infrastructure
2
Cultural
Severe damage to landscape trees and shrubs and to urban agriculture
4
Health
0
Benefit
Notes
Score
Ecological
0
Agricultural
0
Infrastructure
0
Cultural
0
Health
Southeast Asian cultures claim dodders to have a variety of medicinal values
1
Total
20
Ability to Respond
Ease of Response
Notes
Score
Detection
Relatively easy to detect after it has sufficiently spread in a tree or shrub.
4
Control
Control of Japanese dodder, the only non-native that has been found in Ca. is labor intensive involving removal of all infested host material. Fortunately, though Japanese dodder produces flowers in CA. the flowers have not produced viable seed.
3
Tools in Place
Notes
Score
Entry
Strong quaratine laws are in affect to prevent intro. of non-native dodders.
5
Control
With CDFA "A" rated status, all counties are mandated to eradicate non-native dodder when found.
5
Outreach
CDFA and the counties were it has been found have undertaken outreach to educate the public in the communities where it has been found about the protential adverse impacts of non-native dodders.
