During the summer heat most lawn weed killers should be avoided to prevent injuring the grass. The herbicide Image is an exception to this general rule. Image can safely control a number of difficult weeds such as Dollarweed, Nutsedge, Bahiagrass, and Dandelions in Bermuda, Centipede, St. Augustine and Zoysia lawns. Bring us examples of the weeds that you would to like to control to see if they are labeled. Several of the weeds that Image can control will require repeat applications spaced 6 weeks apart.