Never thought about what is actually in the mulch we buy for herping or home use until yesterday when I had a big tree cut that was split and bound to fall - a wild cherry. Upon inquiring the whereabouts of the tree's final resting place - I learned it would go, as I expected to the local mulch maker in my area. So, hmmmm. - yes, when you buy mulch - the bag may be labeled cypress, pine or anything else but you can bet it is ground up with whatever the tree trimmers hauled in that day, week or month. Like I said - I had never really thought about it before and was guessing that many others hadn't either.