Ben from Leland, Nc writes
Atrimmec Plant Growth Regulator is not labeled specifically for Loropetalum, fringe flower, witchhazel (the family of this plant), or evergreens, so we are not sure whether it would be effective or tolerated on this plant. Pruning seems to be recommended and most effective for keeping this plant to desirable sizes. Different cultivars will require slightly different care, too. You can read more about Loropetalum in this article from the Clemson Extension. If you are going to try this on your loropetalum, then we would recommend treating a limited number of plants before treating all of them.
Answer last updated on: 12/29/2016