Hello dendrologists.
I have a bit of a problem in that I've a property with some Tree of Heaven growing up near some buildings I have. They grew from sprouts at the beginning of the summer and are now between 4 and 8 feet tall. I'm worried that if I don't do something soon they will spread everywhere and potentially hurt the concrete they are coming up in.
I was thinking of cutting them down and using a systemic herbicide, e.g. drilling a hole into the trunk and filling that hole with glyphosate or triclopyr. I don't know if this plan will work because I know they put up suckers around them when they get attacked. There is a neighbor here who had a full yard of the tree sprouts that have t