Annual Bluegrass (Poa annua)
Annual bluegrass stems grow up to 12 inches tall and at the top have an open, feathery panicle, or flower cluster.
Weed seeds germinate late summer to late fall and this grass weed starts to grow in spring. Re-seeding happens quickly, during summer into fall. This weed is competitive. It forms dense patches and will take over turf if given the chance.
Use a preemergent herbicide to control annual strains. Apply late summer or early fall (especially if lawn is new) and when evening temperatures begin to cool. Aerate soil to reduce compaction regularly.
When seedlings start to grow in spring pull or hoe immediately. Solarizing black plastic mulch can be an effective manual method of killing weeds. Once under control apply garden mulch.
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Jan 14, 17 08:14 PM
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