plant identification

Asked August 25, 2019, 6:59 PM EDT

I'm looking for an ID for this plant. I live near White Clay Creek SP, and this plant has taken over my mostly wooded yard. The leafy part of the plant is ~50-60cm tall, with the flowered spike extending another ~30cm. The leaves are alternate, and the stem has nodes like a grass. It has fairly shallow roots, but breaks at the nodes when I try to pull it. I can send additional photos, if needed. The closest I can find in my books is Enchanters Nightshade, but that has opposite leaves and this has alternate leaves. Thanks!

New Castle County Delaware japanese knotweed woodland invasive plant

2 Responses

This is likely Japanese knotweed, polygonum cuspidatum. It is an invasive plant difficult to control once established. You can read more about it by scrolling down to fact sheet #4 in this invasive plant list. https://nccde.org/DocumentCenter/View/556/Delaware-Invasive-Plants-List?bidId=



Thank you! I think that's it.
I appreciate your time.