Carthamus lanatus Scorecard

Species:  Carthamus lanatus

Common Name:  woolly distaff thistle

Scorecard created on
Last Updated on

Results

Impact Total:18 / 35Impact = ( Spread + Damage - Benefit )

Ability to Respond Total:12 / 25Ability to Respond = ( Ease of Response + Tools in Place )

Confidence:High

Confidence Notes:

Impact

SpreadNotesScore
Spread RateRapid spread via high seed production.Rated moderate in the Cal-IPC Inventory.4
Spread AmountCurrently on coast but expected to spread.3
DamageNotesScore
Ecological4
AgriculturalSerious impacts to grasslands.5
Infrastructure0
CulturalAesthetic impacts.2
Health0
BenefitNotesScore
Ecological0
AgriculturalUnpalatable to wildlife and livestock.0
Infrastructure0
Cultural0
Health0
Total18

Ability to Respond

Ease of ResponseNotesScore
DetectionDetection occurs after establishment.3
ControlDifficult to control once established.2
Tools in PlaceNotesScore
EntryEradication mandated, noxious weed.3
ControlHerbicides keep populations down.2
OutreachSome outreach, on both Cal-IPC and CDFA lists.2
Total12

References

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