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Confused by thistles?
You're not alone! We get a lot of
folks calling or dropping by to ask how to get rid of their purple
thistle. Well, as you can see from the photos below, nearly
all the thistles in our County are some shade of purple, so color is not
a very good identifier. The thistles pictured here include 5
invasive species and 1 native plant that is a "good guy".
Bull, musk, plumeless and Scotch thistle are all biennial thistles
spreading by seed production only. Canada thistle is the one
noxious perennial thistle we have in the County. It spreads by
underground creeping roots as well as seeds. The native wavy leaf
thistle is a perennial, spreading by seed only. Canada and bull
thistle are common throughout the county. Plumeless is very
prevalent in the north half, with smaller outbreaks south of Hwy 20.
Scotch thistle occurs in every region of the county, but usually only as
small patches and only a few dozen sites total. Wavy leaf likes
dry pine sites and hot, gravelly road banks and can be seen in many
parts of the county. It's flowers are very fragrant.
Click on the pictures below to
see a larger view of each. If you still aren't sure which thistle
you have or if you have any questions in general, please call, stop by
or email our office and
we'll be glad to help.
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