Mulch as necessary. To make sure your soil is evenly moist, conserve water and keep weeds at bay, apply a 2- to 3-inch layer of mulch in any bare areas of your garden. You shouldn't be able to see any bare soil, particularly when the weather is hot and dry.
Use a quality native hardwood shredded mulch, and avoid heaping it on the base of your plants, which can quickly lead to rotting. Instead, feather it toward the stem without actually touching it.