Asked August 30, 2019, 7:39 AM EDT

We put down fertilizer with halts in the spring. Several weeks later we see signs of crabgrass and other weeds. I presume I should use a post emergent crabgrass and weed killer at that point. And then later in the summer season put down more post emergent crabgrass and week killer. My question. Is this a normal routine for trying to control crabgrass and weeds in our lawn?

Howard County Maryland

1 Response

Hello - Mature crabgrass is very difficult to control and it's been especially tough this year. Some years are better than others. University research has shown that proper mowing (3-4 inches -- put your mower on its highest setting), fertilizing, and repairing bare spots are the keys to preventing crabgrass. In the spring, you can apply a pre-emergent for crabgrass control at around the time when forsythia plants are in bloom. You can make a second application 6-8 weeks later. Please refer to our webpage for current recommendations,

Also, here is information on lawn weed management in general,

Now is the ideal time of year to fertilize and overseed cool-season lawns. A dense healthy turf is less susceptible to weed problems. See our turf maintenance calendar for fall fertilizing recommendations,