Poa Annua or ‘Poa’, as it is commonly known, is a very common turf weed and loves wet weather. It usually appears during the winter and spring and can be identified in a lawn by appearing lighter in colour with faster growth and with an obvious whitish seed head very close to the ground. As it is able to drop its seed between mowing, it can spread rapidly. It loves fertiliser, so applying a general fertiliser at this time will be detrimental to your lawn. Poa is very shallow rooted so dies out once the weather warms. This results in large bare areas appearing in the lawn at the start of summer.
To control Poa it is best to ensure your lawn is very healthy with a thick sward of grass as winter approaches. Pendi-Pro, a fertiliser containing a herbicide and pre-emergent, is effective at inhibiting the seeding and spreading of Poa, and Etho-Pro is an effective chemical control.