– Mark Loux and Stephanie Karhoff, CCA, OSU Extension
Figure 1: Once in bloom chemical control is difficult. Photo credit: Joe Boggs.
Poison hemlock is in full bloom across the state and continues to make the news, unfortunately. Poison hemlock is in the Apiaceae or parsley plant family, which also includes wild carrot (Queen Anne’s lace), wild parsnip, cow parsnip, and giant hogweed.
All these species share characteristics with poison hemlock to varying degrees and inhabit both disturbed and undisturbed sites such as roadsides, ditches, pastures, forest edges, and fence lines. Key identifying characteristics of poison hemlock include finely divided leaves (though lesser so than wild carrot, for which it is often confused), hollow stem, and . . .
Continue reading Putting Poison Hemlock into Perspective (Again)