One reviewer noted that Preen isn't a crabgrass killer but a preventer. The implication is that this product, even as a sometimes post-emergent treatment, isn't meant to deal with a lawn full of ...
If you apply pre-emergence herbicides too early, the barrier it creates may weaken before the germination window. This leaves ...
Crabgrass and goosegrass are two common summer annuals ... D.W. Lycan and J. A. Meade. 2004. Weed Control inHome Lawns. Rutgers Cooperative Research and Extension, FS119. Revised August 2003. Chemical ...