HortTips NewsletterVol. 1, No. 1 - University of Maryland Extension
HortTips NewsletterVol. 1, No. 1 - University of Maryland Extension
HortTips NewsletterVol. 1, No. 1 - University of Maryland Extension
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Lawn Weeds:<br />
Lawn weeds such as dandelions, henbit, chickweed, veronica, rough-stalked bluegrass, clover,<br />
annual bluegrass, etc. are growing in lawns now. Rough bluegrass (Poa trivialis) is a shiny light<br />
green, <strong>of</strong>f-color grass with a long ligule. If you had a crabgrass problem last year, get your preemergent<br />
down now!<br />
Dandelion in full bloom<br />
White clover in lawn<br />
Clump <strong>of</strong> rough blue grass<br />
Arrow points to long ligule on rough bluegrass<br />
Poa trivialis or rough bluegrass is very quickly becoming an aggressive hard to control weed in<br />
<strong>Maryland</strong> lawns. Many homeowners first notice it as large clumps <strong>of</strong> lighter green turf in their<br />
lawn during the spring. It will grow more rapidly than the surrounding turf and will set seed<br />
heads quickly much like annual bluegrass. As the temperatures increase and rains become less<br />
frequent these areas will appear to die out leaving thin bare areas. However, the P. trivialis is<br />
only dormant and will come back either in the fall or next spring. Currently there are not<br />
selective herbicides that remove this grassy weed from the lawn. Mechanical or non-selective<br />
herbicide removal followed by overseeding is the only way to manage this problem.
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