Asked July 05, 2016, 5:06 PM EDT
1. I have many seedlings/saplings of a tree that is planted in my yard that I thought was a paulonia.. I offered these on freecycle, but several people warned me that paulonia trees are invasives and I should not share. In researching the tree, I learned that they are similar looking to catalpas. I do know it gets a pretty, orchid looking flower in spring, but can't recall if it develops the cigar like bean in fall. So---how can I tell the difference and should I share the little trees?
2. Every year, I try to grow zucchini and maybe harvest one squash before the plant collapses due to vine borers. I have cut out the borers in years past and put mud around the cut---without success. Is there a way I can prevent the borers instead of trying to treat after they have arrived?
Montgomery County Maryland