Here's some helpful hints to keeping your plants and lawns looking their best during hot dry months: Plant Care Deep water trees and shrubs during times of extreme heat or drought. Prune hedges and summer flowering shrubs after flowering. Continue weeding. Start planning for fall planting season Lawn Care Keep lawn well watered during times of extreme heat or drought. Apply grub control late July/early August. Raise mower height to 3-4 inches during dry weather.