Answer:

Bayer Advanced Southern Lawn Concentrate Weed Killer is not labeled to control sandspurs.  Per the product label bare spots may be seeded 3 to 4 weeks after application.  You can use a product called HI Yield Atrazine Killer which is labeled to treat for Sandspur and can be used in Centipede and St Augustine lawns.  Please let us know if you have a different type of grass and we can recommend a different product.

Answer last updated on: 02/01/2017