Q.Plum Tree Seedlings
I have a 10 year flowering plum tree. This year, it had developed many seedlings in our yard, plus, our neighbor’s yard. I have been pulling them out by hand, but it is necessary every day. How can I get rid of these menacing seedlings?

I suggest you contact your local extension office (found under gov't in the phone book) for help with this problem. Since it appears this mature tree has just started throwing seedlings, there may be some underlying problem that isn't readily apparent. Something is going on that's causing the tree to try to reproduce itself, hence the abundance of seedlings. Pulling them by hand seems the only way to control the problem at this point.