Rubus armeniacus Scorecard

Species:  Rubus armeniacus

Common Name:  Himalaya blackberry

Scorecard created on
Last Updated on

Results

Impact Total:16 / 35Impact = ( Spread + Damage - Benefit )

Ability to Respond Total:5 / 25Ability to Respond = ( Ease of Response + Tools in Place )

Confidence:High

Confidence Notes:

Impact

SpreadNotesScore
Spread RateFrequent observations of nascent patches suggest that continued expansion of habitats is likley, although species is already widely distributed in California (Cal-IPC).4
Spread AmountCommon throughout CA, except deserts, to 1600m (DiTomaso).4
DamageNotesScore
EcologicalShades and out completes natives subcanopy vegetation, explosively flammable, reduces soil moisture. Spines can injure wildlife. Attracts rats that predate on wildlife (Cal-IPC).5
AgriculturalInhabits fields, canal and ditch banks (DiTomaso).5
Infrastructure1
Cultural0
Health0
BenefitNotesScore
EcologicalBerries provide food for wildlife (Cal-IPC).1
Agricultural0
Infrastructure0
CulturalBerries are edible.2
Health0
Total16

Ability to Respond

Ease of ResponseNotesScore
DetectionEasy to detect.5
ControlLabor intensive, use systemic herbicides for established thickets, small populations can be controlled effectively by hand removal (DiTomaso).0
Tools in PlaceNotesScore
Entry0
Control0
OutreachOn Cal-IPC list.0
Total5

References