Q: My son was in the backyard playing soccer, and he must have hit a sprinkler head. The sprinkler now wobbles from side to side, and when the water comes on it’s like Old Faithful. How can I fix it?

For years, I battled clover, crabgrass and weeds in a struggle to keep my lawn healthy—and it’s a fight I lost over and over, resulting in a complete re-sodding of the property, heavy patch removal ...