Fallopia japonica (Japanese Knotweed)

Last night I was disappointed to find these Japanese Knotweed (Fallopia japonica) plants under the larger silver maple where I had cut down some buckthorn and honeysuckle last fall. I'm sure they were growing there last year (the stump of a hollow stem is evidence), but I didn't notice them then. After taking the pictures, I cut them down and submitted them for composting, assuming that's okay since they didn't have any flowers yet. Another item for the Invasive Plants page.