Plum wood

Has anyone used plum wood in their smokers? I have found a couple places locally selling it. I can get 2 year dry for $50 a truck load or free if I want to go out and cut down the dead trees.

Which would be better the 2 year dried would or the trees from the old orchard. Of course free is always best. Here is the description from the orchard ad. "The orchard was cut down many years ago but a lot of the wood was left behind, branch wood, stumps (they've rotted in the ground so can be kicked over), and some whole dead trees as well." I bought a used double barrel heater that I am turning into a smoker and read that you use wood instead of charcoal.