Increase watering time until the moisture reaches this level. Depending on your soil type, during hot weather this should be enough water for two weeks. There were a lot of weeds in the garden and lawn last year. Hand-pulling, hoeing or digging are effective. Try to pull weeds before they germinate and spread.
Prevention helps, too.
Mulch keeps weeds under control. If you had a serious problem in the garden, solarizing is a good idea. Solarizing is covering areas with clear plastic and allowing heat from the sun to destroy weeds. Also, keeping your lawn healthy and vigorous will discourage weed growth there. The Garden Detective column is compiled with the help of master gardeners at the UC Cooperative Extension Service in Sacramento County.