Wild Parsnip: Too Late to Control, Not Too Late To Identify. Poison Hemlock: TOO LATE!

Wild Parsnip (Pastinaca sativa L., family Apiaceae (previously Umbelliferae)) is in full bloom in Ohio with recent hot temperatures accelerating seed development, particularly in the southern part of the state. This means it’s too late to reduce the seed bank of this highly dangerous non-native invasive weed by targeting flowering plants with herbicides.

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Authors

Joe Boggs

Poison hemlock (Conium maculatum) is in full flower in much of Ohio with some plants showing signs of senescence in the southern part of the state meaning flowers are mature and seeds will soon follow. This means it’s too late to reduce the seed bank by targeting flowering plants with herbicides or mowing.

Published on

Authors

Joe Boggs