Centaurea stoebe ssp. micranthos Scorecard

Species:  Centaurea stoebe ssp. micranthos

Common Name:  spotted knapweed

Scorecard created on
Last Updated on

Results

Impact Total:17 / 35Impact = ( Spread + Damage - Benefit )

Ability to Respond Total:15 / 25Ability to Respond = ( Ease of Response + Tools in Place )

Confidence:Medium

Confidence Notes:

Impact

SpreadNotesScore
Spread RateRapid reproduction, high seed set.4
Spread AmountNear complete spread already.4
DamageNotesScore
EcologicalPotential to out compete native species.4
AgriculturalProblem for grazing.4
Infrastructure2
CulturalImpacts recreational use of grasslands.2
Health0
BenefitNotesScore
EcologicalMajor competitor of natives.0
AgriculturalGood for honey.2
InfrastructureNo apparent potential benefit.0
CulturalHoney1
Health0
Total17

Ability to Respond

Ease of ResponseNotesScore
DetectionDetection occurs after establishment.3
ControlDifficult to control once seed bank established.1
Tools in PlaceNotesScore
EntryAccidental entry common. CDFA A listed.4
ControlCDFA A listed with active control program.4
OutreachOutreach info widely distributed, both CDFA and Cal-IPC.3
Total15

References

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