What is this growing in my yard

Asked April 15, 2019, 7:22 AM EDT

We have a bamboo, grass like plant that turns brown in fall and winter. Summer it is green, approximately 4-5 tall. We dug it up and it is coming back has red flowering and it is spreading.

Calvert County Maryland weeds japanese knotweed invasive

1 Response

This looks like Japanese knotweed (Reynoutria japonica). https://www.marylandbiodiversity.com/viewSpecies.php?species=3543

This weed is invasive and very difficult to manage. Do not expect to control it in one season. It may take a combination of techniques and repeated effort. Please take a look at the following links to information on how to manage it.
https://extension.umd.edu/hgic/topics/japanese-knotweed
http://mdinvasives.org/iotm/sept-2009/

Christa