What is Yellow Nutsedge and How Do I Control It?
Don’t let its silly name fool you. Yellow nutsedge doesn’t play around. It’s a perennial, grass-like lawn weed. Although it’s sometimes called nutgrass, it’s not technically a grass. It’s a sedge. Its leaves are grasslike and yellow-green, and the spiky flower or seed head is yellow. Yellow nutsedge can be distinguished from good grasses by its V-shaped stem. The best way to identify it? If you’ve mowed and a day or two later you see yellowy grass growing higher than your lawn… yellow nutsedge is the culprit. It’s a tough weed to control because its tubers (also known as “nutlets”—cute, huh?) can grow 8-14 inches deep in the soil.
YELLOW NUTSEDGE PREFERS MOIST SOIL, BUT DOES JUST FINE IN DRY SOIL
Its tubers sprout new plantlets in late-spring through mid-summer. Individual nutsedge plants may eventually form patches of 10 feet or more in diameter. Clearly, it’s one tough weed.
BATTLING NUTSEDGE: 2 STEPS TO VICTORY
Depending on your turf type and elevation, you can help control yellow nutsedge by mowing your lawn at the proper height, which in most cases is one of the two highest settings on your mower. This lets the grass crowd out yellow nutsedge and other weeds. Yellow nutsedge loves it when you mow on a short setting
Show it who’s boss
Early summer is the perfect time to apply Roundup® For Lawns. It’s going to take two applications if the yellow nutsedge is three to six inches tall. Apply the second round 14 days after the first one.