Why Your Georgia Lawn Needs Spring Pre-Emergent Weed Control

By April 4, 2018Lawn Care

It’s time to apply spring pre-emergent weed control to your Roswell lawn.


Because annual bluegrass, crabgrass and other grassy weeds will start popping up on your property in a few weeks.

In this blog, you’ll learn why your GA lawn needs spring pre-emergent weed control, as well as why it’s done in six-month cycles. You’ll also learn how to handle annual bluegrass that’s resistant to these pre-emergents.

Finally, you’ll learn how your local lawn care company can help you get your weekends back by taking care of all your lawn care needs, including pre-emergent weed control.


Why Your Lawn Needs Pre-Emergent Weed Control


Your GA lawn needs pre-emergent weed control. Crabgrass and other grassy weeds start sprouting first before they develop root systems. So, your lawn care technician applies pre-emergent to form a barrier within the soil to keep grassy weeds’ roots from developing.

And the opportunity to apply this type of weed control is for a very short window in early spring—March 1 through March 15. You’ll also need another round of pre-emergent weed control in September, from the first through the 15th.


Because grassy weeds actually start their season in the fall and are at the end of their season come March. During both times, grassy weeds are developing seed heads that are carried by the wind, birds, your shoes as well as many other ways to spread seed that sprouts.

Poa annua—The Resistant Weed


There is one grassy weed that is becoming resistant to pre-emergent weed control—Poa annua—otherwise known as annual bluegrass. Since this weed is so prevalent in the South, it’s developed a resistance to pre-emergent herbicides.

Learn more about Poa annua and fall pre-emergent weed control in this blog post.


Now, lawn care companies are spot-spraying Poa annua after it’s germinated to stop it in its tracks.

However, you can control Poa annua so it doesn’t take over your North Atlanta lawn. Here are four steps to take:

  1. Cut back on your irrigation: Too much water leads to annual bluegrass outbreaks. Grass can’t grow when it gets too much water, but annual bluegrass thrives in soggy conditions.


  1. If your soil is compacted, have it aerated this spring: If you have a lot of construction going on your property or you have a lot of foot traffic, you most likely have compacted soil. Springtime is the perfect time to aerate your warm season lawn. However, it’s best to wait until fall to aerate lawns with fescue grass.


  1. Make sure you’re not scalping your lawn: At the end of winter, it’s appropriate to scalp your lawn so your Bermuda grass can grow. However, it should be only a once a year scalp. If you cut your grass too low each time you mow, you’re allowing Poa annua seeds to germinate in your property.


  1. If you have poor drainage on part of your property, get it repaired: It’s the same theory as watering your lawn too much. Soggy areas encourage annual bluegrass germination and spread it to the rest of your property.


Proper Lawn Maintenance is a Must


Did you know that how you cut your lawn, how much you irrigate it, and how much you fertilize it all result in whether you have a weedy or non-weedy lawn?

Here’s what you need to know:

  1. Keep your mower’s blades sharp: Sharp blades give a cleaner cut, and they protect your lawn grass from tears and other injuries.


  1. Set your mower high or low based on the season: Earlier in the spring and later in the fall, you can cut off 1–2 inches of your lawn grass because it’s growing rapidly. However, during the hot, humid months of summer, when growth stops, you want to take off only the top third to help your lawn conserve water, limit disease, as well as survive the hot summer months.


  1. Get a smart sprinkler system: When you invest in a smart sprinkler system, you can program it to water your lawn at a certain time of day for a set period of time. Also, today’s sprinkler systems come equipped with moisture and weather sensors to shut off at the start of rain. Not only will your lawn be healthier, but you’ll save money on your water bills too.


  1. Only water your lawn once or twice a week: Depending on how much rain you have per week, you can get away with watering your lawn only once or twice a week. You’ll find that your grass grows better when it has a good soaking instead of a daily sprinkle.


  1. Hire your local lawn care company to maintain your property throughout the year: If you’re a busy homeowner with young kids or you’re retired, you may want to hire your local lawn care company to take care of your lawn. A professional lawn service will fertilize and administer weed control applications at the right time and in the right amount. They’re experts who work hard to make your property look beautiful.




Remember, you need to apply pre-emergent weed control within a small window of time. A barrier will form in the soil that blocks crabgrass and other grassy weeds from developing root systems.

Poa annua is slowly becoming more resistant to most pre-emergent weed controls. Lawn care professionals are now spot spraying these weeds after they emerge.

And a good lawn maintenance program helps keep weeds out of your lawn. If you want to take your weekends back, then it’s a great idea to hire your local lawn service.

At Agropro, we’re the experts in controlling weeds and making your GA lawn look beautiful all year long.

If your lawn needs pre-emergent weed control, call us today at 678-445-9990 or fill out our estimate form. We start applying pre-emergent weed control on March 1st.

Agro Pro Lawn Care ~ Lawn specialists are serving these North Georgia cities: Alpharetta, Atlanta, Buckhead, Canton, Cumming, Dunwoody, Johns Creek, Marietta, Milton, Roswell, Sandy Springs and Woodstock.


Clemson University Cooperative Extension, “Managing Weeds in Warm-Season Grasses,” HGIC: 2310.

Davenport, Millie, “Annual Bluegrass Control in Lawns,” Clemson University Cooperative Extension: Video and script.

WalterReeves.com, “Lawn—Timing Spring Pre-Emergent Herbicide Application.”