MSM Turf and Oak Trees

MSM is highly toxic to oaks, in particular... there's tons of research saying you should avoid spraying under the canopy unless you're using very low doses.... and certainly avoid any drift onto exposed roots... or you'll be dealing with a Harvey Updyke situation

There is a hand written sign where I buy MSM that says, "DO NOT SPRAY UNDER THE CANOPY OF TREES". I've done it a couple times, but have stopped since I've seen the sign.

I treat under our oak trees with MSM Turf all the time.