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Italian Thistle

Carduus pycnocephalus

Plant Description

Cobwebby hairs cover stems and undersides of leaves, spiny wings on stems. Leaves are deeply incised with slightly woolly undersurface. Purplish to pinkish flowers that can either be solitary or in clusters.

Plant Details

Life Forms
ODA Listing
Soil and Moisture Conditions
Suggested Actions
Shade Preference
Mature Height 1-4'
Distribution Found in western Oregon.
Control Cover with black plastic, dig, hand-pull, or till small infestations. For larger infestations, tilling or use of chemicals are more effective.
Reproduction and Spread Produces up to 20,000 seeds per plant that are dispersed by wind.
Introduced native to the Mediterranean. First recorded in Lane County in 1929.
Look Alikes other thistles
Impact Degrades rangelands and pastures, creates dense stands.
More Info
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