Q : Recently I noticed, on two mesquite trees, a tarry-looking seepage coming out, and in some cases dripping onto the ground. What is it, and what if anything should be done about it? The only thing ...

Q: I just moved to the Tucson area and in the front yard is a very large mesquite tree that has not been trimmed much over the years. It appears that a couple large branches may have broken in the ...