Posted 3/3/2026 04:58 (#11571560 - in reply to #11571327) Subject: RE: best preemerge for landscape rocks
NE Iowa
The expensive stuff they sell for that is called Preen. It is a dry product you sprinkle around your landscaping. The active ingredient in Preen is the same as Trifluralin which Treflan. A little mix of generic tri-4 would probably cost $1 vs $35 for two containers of Preen.
best preemerge for landscape rocks
