Winter Weed Control on Warm-Season Grasses

With the colder weather hitting the states lately, we don’t need to be worrying about weeds, right? Wrong! Areas with warm season grasses, like Alabama, can still have a weed problem even when the turf goes dormant.

Except for parts of Florida, most warm season grasses enter into a dormant state during the winter. They will turn brown and not green-up until next spring through early summer. Even though the grass turns brown, there are still weeds that continue growing throughout the winter dormant period.

These broadleaf weeds are basically classified into annuals and perennials. They can also be broken down into winter germinating and summer germinating weeds. Some weeds germinate in the fall/winter, grow throughout that period and then die when the warm weather returns next year. Winter germinating weeds will produce flowers and seeds during that time, which will then germinate again next year. That’s why winter weed control on warm season grasses is so essential—applying a weed control application or two during the dormant-turf period will help to eliminate these weeds from your lawn.

Most broadleaf weed control products will take care of the majority of the winter germinating annual weeds like Henbit, Large Hop Clover and Chickweed. One good thing about warm season grasses turning brown in the winter is that a non-selective weed control product like Round-Up can be used on grassy weeds like annual bluegrass and Dallisgrass. Be sure the desired grasses are completely dormant, but that the grass you wish to control is still green and growing before using Round-Up.

Winter is also a good time to apply a pre-emergent weed control product to prevent many annual grasses from germinating. As the name implies, these products will control problem weeds, like crabgrass, from germinating.

Even though your yard may be brown during the winter, there are still a few tasks that you can do to have a more weed-free lawn next year. Talk to your local Spring-Green professional to find the right program for your lawn and budget!