Annual Bluegrass Killer

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Characteristics

  • bright green leaf with boat-shaped tip
  • leaf has a smooth texture
  • low growing and tends to grow in bunches
  • winter annual weed
  • likes to grow in compact and moist areas
  • seed heads are greenish to white/off-white color

Treatment

Selective Herbicide

The most effecitve method in knocking down your Poa Annua population is though the use of selective herbicides. These herbicides are specifically designed to target your Poa Annua and not the surrounding vegetation. Selective herbicides Poa Annua tend to be more on the expensive side so figuring out which is best for you and your lawn is very important. As of recent, Poa Annua has developed resistance to some herbicides so long term control may involve rotation of herbicides. Here are some tips for selecting the right product:

  • Identify what kind of grass you have in your lawn. Some products are not safe for sensitive grasses such as St.Augustine so this will help narrow your search.
  • Many of the chemicals are limited to warm season grass such as zoysiagrass, bermudagrass, centipede, and St. Augustine. 
  • Determine the scope and severity of your Poa Annua infestation. If you have a small lawn and a light infestation, that $300 bottle may not be for you.
  • If you have properly identified the grass in your lawn you can use our filter options to find products that are safe for you lawn:

 

Non-Selective Herbicides

  • A non-selective herbicide will kill any vegetation that it touches.
  • Apply ONLY when your surrounding turf grass is dormant (all green is gone) and spot treat trouble areas.
  • Apply when there is a low chance of rain to avoid runoff of chemical to other vegetation.
  • Recommended ProductsGly Pho-Sel Pro Dry 75 SGEraser Max, and Alligare Glyphosate 5.4 

Prevention

  • Application of pre-emergent herbicides is the most effective way to control annual bluegrass.
  • The first application needs to happen in late fall/early winter before the seed germinates.
  • Apply is when the soil temperature reaches around 70 degrees.
  • A second application is recommended for seeds that germinate late.
  • Pre-emergent herbicides only prevent germination. They do not get rid of an established population.
  • Recommended Products:  Prodiamine 65 WDG, Dithiopyr 40 WSB, and Hi-Yield Turf & Ornamental Weed & Grass Stopper  

Discover the ultimate solution to unsightly Annual Bluegrass invasions with DIY Pest Control’s Annual Bluegrass killer. Specially formulated to target and eradicate this persistent weed, our Bluegrass weed killers ensure your lawn remains lush and immaculately green. Trust DIY Pest Control for a lawn that’s free of annual bluegrass and full of life.

Annual Bluegrass (Poa Annua) Control

Annual Bluegrass, or Poa Annual as some people call it, is a tricky winter annual weed that can be difficult to control and near impossible to completely eradicate. One of the reasons for that is that Poa Annua will produce seed heads throughout its life cycle and especially during the spring months. Poa Annua dies during the summer months and germinates during the fall months. It will start to flower and produce seeds in the spring months as mentioned earlier. It grows well in cooler, moist conditions and often in compact soil.

Characteristics

  • bright green leaf with boat-shaped tip
  • leaf has a smooth texture
  • low growing and tends to grow in bunches
  • winter annual weed
  • likes to grow in compact and moist areas
  • seed heads are greenish to white/off-white color
annual bluegrass

Treatment

Selective Herbicides

The most effective method in knocking down your Poa Annua population is though the use of selective herbicides. These herbicides are specifically designed to target your Poa Annua and not the surrounding vegetation. Selective herbicides Poa Annua tend to be more on the expensive side, so figuring out which is best for you and your lawn is very important. As of recent, Poa Annua has developed resistance to some herbicides so long term control may involve rotation of herbicides. Here are some tips for selecting the right product:

  • Identify what kind of grass you have in your lawn. Some products are not safe for sensitive grasses such as St.Augustine so this will help narrow your search.
  • Many of the chemicals are limited to warm season grass such as zoysiagrass, bermudagrass, centipede, and St. Augustine. Care should be taken with cool season grasses such Kentucky Bluegrass and Fescue grasses. Use Tenacity herbicide on cool-season turf as an pre-emergent and it will not effect over-seeding.
  • Determine the scope and severity of your Poa Annua infestation. If you have a small lawn and a light infestation, that $300 bottle may not be for you.
  • If you have properly identified the grass in your lawn you can use our filter options to find products that are safe for you lawn:

Non-Selective Herbicides

  • A non-selective herbicide will kill any vegetation that it touches.
  • Apply ONLY when your surrounding turf grass is dormant (all green is gone) and spot treat trouble areas.
  • Apply when there is a low chance of rain to avoid runoff of chemical to other vegetation.
  • Recommended ProductsGly Pho-Sel Pro Dry 75 SGEraser Max, and Alligare Glyphosate 5.4 

Prevention

  • Application of pre-emergent herbicides is the most effective way to control annual bluegrass.
  • The first application needs to happen in late fall/early winter before the seed germinates.
  • Apply is when the soil temperature reaches around 70 degrees.
  • A second application is recommended for seeds that germinate late.
  • Pre-emergent herbicides only prevent germination. They do not get rid of an established population.
  • Recommended Products:  Prodiamine 65 WDG, Dithiopyr 40 WSB, and Hi-Yield Turf & Ornamental Weed & Grass Stopper  
  • Tenacity Herbicide (Use as an pre-emergent on Kentucky Bluegrass and Fescue grasses)

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