Hello experts. these are growing on an empty lot. the ornamental grass? is about a foot high. the other is about 2ft high. what are they and are they a problem? thanks all keep safe
Are you able to revisit these? Can you check if the leaves on the second are rounded? Most look like that to me, meaning it is a Juncus or rush. Not a concern (there are some bladed leaves there, but I think that belongs to something that is growing within the clump. The first could be some sort of willow perhaps -- if so, still not a problem. (by the way, what do you mean by problem? Likely to invade local ecosystems? Likely to be aggressive and cross into neighbouring yards?)
photos taken today. yes you described the problem perfectly second one the green things are round thanks