Carduus nutans Scorecard

Common Name: musk thistle

Scorecard created on February 10, 2023 - 10:03am

Last Updated on February 14, 2023 - 2:36pm

Results

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

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

Confidence:High

Confidence Notes:

Spread	Notes	Score
Spread Rate	Ability to spread through multiple dispersal mechanisms.	4
Spread Amount	Can occupy many ecotypes in the mountainous regions fo the state, but not yet spread to a potential extent.	4

Damage	Notes	Score
Ecological	Creates monocultures displaces natives	4
Agricultural	Will displace desirable forage of dryland and partially irrigated pastures.	4
Infrastructure		0
Cultural	Diminished access to recreational areas.	1
Health	Pokey!	1

Benefit	Notes	Score
Ecological	Can provide pollinator habitat and a food source for birds.	1
Agricultural	none	0
Infrastructure		0
Cultural		0
Health	Some notes for minor use medicinally	1

Total		16

Ease of Response	Notes	Score
Detection	Once established, tall with showy flowers can be easy to detect, but also difficult to detect in remote areas.	4
Control	Can be controlled with herbicides or physical methods. But control takes tie and the method used can impact surrounding systems.	3

Tools in Place	Notes	Score
Entry	On CDFA 4500 list, no longer "ranked"	2
Control	Some areas actively control- will be interesting with new noxious ranking.	2
Outreach	On CAL IPC and on 4500 list	2

Total		13