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Onopordum acanthium
Scotch cottonthistle Aster Family
Onopordum acanthium Asteraceae
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common names
  Scotch cottonthistle
  cotton thistle
accepted scientific name
  Onopordum acanthium L.
rules for finding collection records
  Onopordum acanthium (605)
family name
  Asteraceae
Image Author: ©2013 Richard Spellenberg
Image License: CC BY-NC-SA
Image Source
Category: Wildflowers
Flowers: No obvious petals
Petal colors: color
Flower size is 1. to 2. inches
Leaf: Alternate
Plant Observed beginning of May thru end of October
Invasive in AZ, CA, CO, CT, ID, MO, NV, NM, OK, UT, WA, WY. Noxious weed in OR.

How Likely at this Location (22%)
Name Match (100%)
Plant Showiness (63%)
base map where plant found

Disturbed
Grassland
Riparian
grid lines base