Fred from Annandale, Nj writes
Is Princep a good pre-emergent to use on established lawns with blue grass, rye and fescue.
Looking to control Japanese stilt grass as a main focus, with crabgrass and other weeds as a by product.
Answer:
Princep Liquid Herbicide should not be applied to cool season turf. A pre-emergent herbicide such as Pendulum Aqua Cap would help with prevention but will not treat actively growing Japanese Stiltgrass. We would suggest a selective post-emergent such as Acclaim. Acclaim Extra is a selective post-emergence herbicide that controls annual and perennial grasses in turf including Japanese Stiltgrass. Please refer to product label for specific applications to your turfgrass.
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Answer last updated on: 10/01/2019
