Can I mix a lot of different smoking woods together? Due to planting some trees in an unfortunate location, I lost them due to root-rot.

I have about eight small dead trees with trunks about 3/4" thick, and am wanting to cut them up for smoking woodchips for grilling. Since each tree doesn't have much wood - maybe three to five pounds each - and since I'm just a very casual grill cook not an enthusiast, I was hoping I could just mix all the chips together in one bag.

The trees are: two cherries, an almond, something that might be pecan, another that is possibly a plum, and a nectarine.

If you had a bag of "assorted" wood chips like those above all mixed together, would it taste terrible to smoke with, for a casual cook who just grills chicken, porkchops, and hamburgers?

I also have a copious amount of mulberry, but I was leaving that seperate since it's of a significant quantity. I wouldn't mind mixing in some to the assorted bag if advised to, though.
Yes, you may mix different species of wood together for smoking. If the combination tastes unbalanced or muddled to you, just pretend the wood chips are from a rare Amazonian hardwood species, and it will suddenly taste amazing, even to the fussiest of "experts". Better to obsess about the quality of the meat itself, or maybe even the characteristics of the wine.

P.S. sorry about your trees, that must have hurt.