Conifers dying back
Hi everyone, if you put down a plastic membrane and cover it with a heavy layer of gravel all over except for a few low creeping conifers dotted here and there you keep out weeds. if you are on a slope and spray around ( avoiding the conifers) with resolvo, when it rains will the rain wash the resolvo all through the ground and start to kill the conifers. Opinions welcome please. Trying to find out why the conifers are starting to die.