The more mulch the better
Now that it’s the heat of summer, people notice how quickly garden soil can turn dry. Mulch is the best way to keep water from drying in the hot, hot sun or for wind to seep away what little water you apply.
Benefits: Mulch provides a barrier between the soil and the hot sun, keeping moisture in place. Mulch will also prevent water-sucking weeds from growing. If weeds still manage to sprout, the roots will be spindly and easy to remove.
How thick is good enough?: For wood chips, pile it high. Three inches or more won’t be too much. However, if you’re using compost or a very fine bark, a layer more than three inches could cut down on oxygen in the soil.