Author Image: Mary Knoerdel

Mary Knoerdel

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Cobweb thistle_Hanson.jpg:  Not all thistles are “bad.”  This Cobweb Thistle (Cirsium occidentale) is a native that usually blooms between May and July. Thistles like this one can act as a home and feeding station for butterflies, moths, bees and other insects as well as birds.  - Photos by Mary K. Hanson