Do not water again until the grass shows signs of drying out such as an off-green or blue color, or wilting. If you choose not, or cannot water your lawn, the turf will go dormant during dry periods. The turf will recover when substantial rainfall occurs. The adults of white grubs are about two to three weeks later than normal this year and the young white grubs should be just hatching in the soil right now. Start checking for white grubs by digging into the top few inches of soil in numerous places around the lawn.
Grubs are very small and tough to detect.
If you find four to six grubs per square foot, consider applying an insecticide. However, since the grubs are so late this year there is a very good chance that they will cause minimal damage before our regular fall rains come. If you find grubs but don't want to apply an insecticide, irrigate more frequently because the turfgrass should outgrow the grub feeding damage if no moisture stress is added. Rust in Turf Grasses Don Scott, Extension Plant Pathologist Rust has become a significant problem in some home lawns and other turf grass areas. Homeowners often first recognize the disease when they walk through a lawn and find that their shoes and pants cuffs are coated with an orange to reddish powder.