Yellow starthistle (Centaurea solstitialis) is considered a noxious weed in 12 Western and upper Midwest states. An eradication program is recommended as soon as the annual (sometimes biennial) yellow ...
This-le, noun, widely distributed herbaceous plant of the daisy family, typically has prickly stems and leaves and rounded heads of purple flowers. There are more than 62 varieties of native thistles ...
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