How to Kill Poa Annua L.
Poa annua L. is the scientific name of annual bluegrass, which many farmers and homeowners consider to be an invasive weed species. The plant lives in all areas of the United States and grows during the cool months. The coloring of annual bluegrass, or Poa, is lighter in color than other grasses, which makes it easily identifiable. The plant has both annual and perennial species and can be difficult to get rid of. Does this Spark an idea?
Things You'll Need
- Lawn mower Grass catcher Herbicide with ethofumesate Garden sprayer Water
Instructions
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1
Increase the height at which you mow the area to at least 2 inches. Poa cannot compete with surrounding grasses when they are this tall. Eventually, the taller grasses will kill off the Poa.
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2
Attach a grass catcher to the lawn mower during early spring so that you will not redistribute the bluegrass seeds into the lawn. Poa begins to die out as the temperature rises and produces seeds just before it dies out.
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3
Wait until early September before the Poa begins to regrow and apply a herbicide that contains ethofumesate. Pour the herbicide into a garden sprayer and mix it with water as directed by the packaging instructions. Spray it liberally onto the entire lawn, focusing the spray on the soil, not the existing grass.
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4
Wait about three weeks and apply the herbicide a second time, in the same manner as the first.
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Tips & Warnings
You can also use herbicides that list pronamide as one of the ingredients to effectively kill Poa. Apply these herbicides in September.
