What is Annual bluegrass (Poa Annua)?
Poa Annua is a widespread, low-growing, tufted winter annual grass which germinates in the fall and reproduces by seed in the spring. Poa Annua is a prolific seed-producer. It develops seed heads in early-to-mid spring, and a large population can be unsightly in a lawn with an unsightly white seed head . It is the most common annual bluegrass found in Virginia lawns. The light green leaves are short and blunt at the tips. When left unmowed, annual bluegrass can grow from 6 to 8 inches high.
It is often found in compacted areas along the driveway and sidewalk edges, in lawns and flowerbeds. It is also capable of crowding-out Tall Fescue seedlings over the winter months. The annual bluegrass root system is weak and shallow. It grows well in moist areas and can cause problems for healthy lawns.
Poa Annua Solution:
Mowing and edging the lawn on the tallest setting, especially in the fall months will help prevent this grass from germinating. Another option is to have Virginia Green spray the lawn with a post-emergent herbicide (ethofumesate) in the late fall.
Keep in mind that Poa Annua seeds are tough and can survive many seasons without germinating.
The supplemental fall treatment is only warranted if Poa Annua is a problem in the interior of the lawn space. Compacted edges will always be problematic since the soil is not conducive to growing Tall Fescue.
To learn more about how to remove and prevent Poa Annua, and improve the overall look, feel, and durability of your lawn contact contact Virginia Green at (804) 285-6200. We offer comprehensive lawn care services to keep your lawn healthy and beautiful.