Left Hand Valley Courier - All Local, All The Time

By Sharon Bokan
Colorado State University Extension Boulder County 

Thistles, the good, the bad and the native

 
Series: CSU Extension Boulder County | Story 24

Courtesy Photo

Native wavy leaf thistle

When we see a plant and it is prickly, we automatically assume it is a thistle and therefore it is a bad plant. The Oxford Dictionary defines a thistle as "a widely distributed herbaceous plant of the daisy family, which typically has a prickly stem and leaves and rounded heads of purple flowers." There are 20 thistles native to Colorado and they are desirable plants? Thistles are in the Ast...



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