Home Depot article: Poa annua weed becomes visible in winter and early spring in dormant lawns, such as Bermuda grass, which turn a straw color in the winter. In fescue and other cool-season lawn grasses that stay green all year-round, poa annua can leave bare spots in your lawn when it dies off in summer heat.
One poa annua weed clump can produce hundreds of seeds in a season. Seeds also can lay dormant for several years before sprouting again, making this weed difficult to control.
Poa annua thrives in compacted soil, wet soil from over-irrigated lawns and lawns with high applications of nitrogen or fertilizer. Also, if you mow too low, you’re creating an environment where the weed seeds will get sun and germinate, creating more weeds.
Solution: treat it like crabgrass, although it’s a cold-weather weed.
Get control before germination begins. In the South, apply pre-emergent to your grass using a garden hose for applying liquid or a spreader for granular application. The best times to apply pre-emergent are January or early February, as soon as weather permits in winter on southern lawns. Then, apply it again in October. In April and July, use pre-emergent with fertilizer.
Be cautious. For cool-season grasses needing over-seeding in the fall, do not apply pre-emergent at that time. Poa annua is green in the winter, so it coexists well with fescue and rye.
The Home Depot carries all the tools and supplies you need to get rid of crabgrass, as well as supplies to prevent crabgrass in your turf grass. Shop your local Home Depot for a wide selection of pre-emergent herbicide, postemergence herbicide, grass seed, fertilizer and the right lawn mower for your needs. Use The Home Depot Mobile App to locate products and check inventory. We’ll take you to the exact aisle and bay.Home depot article:
Once your grass wakes up in the spring, follow healthy lawn maintenance practices. A healthy lawn will keep crabgrass and weeds at bay. This is a good time to inspect your lawn for bare spots that need to be addressed.
A thick and lush lawn will leave little space for weeds to grow. When your lawn is underfed, it gets stressed and has a greater chance of being taken over by weeds. Fertilize your lawn every six to eight weeks during the growing season.
Use a Pre-Emergent
Weeds thrive in stressed lawns. Most grass species benefit from deep watering. Make sure your lawn receives one inch of water per week, either from rain or watering. The water needs to soak the soil six to eight inches deep. Deep watering encourages your lawn to develop deeper roots, so it can grow thicker to help crowd out weeds.
How to Treat Poa Annua Weeds
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