pre-emergent crabgrass killer
Is today too late to have it be effective?
Howard County Maryland
Look at our website for crabgrass control and Tips for application. During and shortly after, forsythia bloom is a rough, but not consistently reliable, guide for application timing. You will have to look at soils temperatures too. If you do not have a soil thermometer, you may have to rely on the above. There are numerous products on the market. Look for a product without fertilizer. http://extension.umd.edu/hgic/crabgrass
See more on the following publication http://extension.umd.edu/sites/extension.umd.edu/files/_images/programs/hgic/Publications/non_HGIC_F...