I am noticing these everywhere – including along my neighbour’s fence near my house. It grows very very quickly. The leaves are kind of furry. I’m sure everyone knows this but me, but the only invasive weedy tree I have experience with is Tree of Heaven, which is much different. Thanks for your expertise.
Thanks for your inquiry. It’s a bit difficult to make a positive identification from the picture provided but it may be a Catalpa. I have attached a link which describes this tree in detail. If it does not accurately describe the tree / weed in question, please submit another photo with a close-up of the leaf and trunk.