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Nutsedge and dallisgrass are two common weeds that can be found in lawns and gardens throughout the United States. Although both weeds have similar characteristics, there are several key differences that can help you to identify and control them.
Nutsedge (above), also known as nutgrass, is a perennial weed that has triangular-shaped stems and long, narrow leaves. It typically grows taller than the surrounding grass and can be found in both sunny and shady areas. Nutsedge reproduces through underground tubers, called nutlets, which can sprout new plants.
Dallisgrass (above), on the other hand, is a warm-season perennial grass that has a similar appearance to Bermuda grass. It has a bunch-type growth habit, with a dense cluster of leaves at the base of the plant. Dallisgrass reproduces through underground rhizomes, which can sprout new plants.
One of the most significant differences between nutsedge and dallisgrass is the time of year that they are most active. Nutsedge is most active in the summer and fall, while dallisgrass is most active in the spring and summer.
Another difference is the way to control them, Nutsedge can be controlled with the use of post-emergent herbicides specifically labeled for nutsedge control. Dallisgrass, on the other hand, can be controlled with pre-emergent herbicides specifically labeled for dallisgrass control.
It’s important to note that both nutsedge and dallisgrass can be difficult to control once established, so it’s important to address these weeds as soon as they are spotted. Be sure to always follow the instructions on the label when using any herbicides and to check with local authorities and experts to confirm.