Centaurea diffusa Scorecard

Species:  Centaurea diffusa

Common Name:  diffuse knapweed

Scorecard created on
Last Updated on

Results

Impact Total:13 / 35Impact = ( Spread + Damage - Benefit )

Ability to Respond Total:13 / 25Ability to Respond = ( Ease of Response + Tools in Place )

Confidence:Medium

Confidence Notes:

Impact

SpreadNotesScore
Spread RateSpreads rapidly4
Spread AmountCan invade many ecotypes4
DamageNotesScore
EcologicalDisplaces desirable species4
AgriculturalPoor forage, not a weed of crops3
Infrastructure0
CulturalPokey seed heads' dense patches can be a barrier2
Health0
BenefitNotesScore
EcologicalGood pollinator habitat2
Agricultural0
InfrastructureMinor erosion control1
Cultural0
HealthMinor reported medicinal uses1
Total13

Ability to Respond

Ease of ResponseNotesScore
DetectionDetection is easy once flowered but grows in hard-to-reach places3
ControlSoil seed life can make control challenging 3
Tools in PlaceNotesScore
Entry4500 list, but no lettered designation 2
Control4500 list, but no lettered designation 2
OutreachThere are extension materials from other states available3
Total13

References