There’s been much hype lately about the invasive plant species commonly called giant hogweed (Heracleum mantegazzianum). Although from a different family, it has similar toxicity to the wild parsnip (Pastinaca sativa) which is so prevalent in this part of the country.
Please be aware of the differences in this plant and our native angelica (angelica atropurpurea) and our native cow parsnip (Heracleum lanatum). Here’s a good photo comparison.
Should you come across giant hogweed during your hikes/travels, please don’t touch. If you accidentally come in contact with this plant, immediately cleanse the affected area and stay out of the sun for at least 48 hours. Also immediately contact your local DNR or Land Conservation office and alert them to the location. Here’s a good summary.
After reading your article, I think I have a giant hogweed in my yard. It is about 6 feet tall now and hasn’t flowered out yet. But the leaves and the stalk look very similar. Since this spring we were wondering what type of plant it is, as its growing right alongside of a flower bed. I’ve taken some pictures and will send them into Wisconsin’s herbarium for identification.
Good news! I am told its wild lettuce and not giant hogweed.
Hi! Ken. Thanks for letting me know your mystery plant is woodland lettuce (Prenanthes alba) (often called white lettuce or lions foot). I’m glad your plant is a lovely native instead of a nasty non-native.