Heavy rains makes it easy to think the plants are watered, but are they ?
A five to seven gallon potted plant needs at least a quart water, and if your plant has a lot of foliage not much rain gets into the soil.
What if your plants are under an overhang ?
So, even on those days when boulders are on the road in Malibu Canyon due to the heavy rains, make sure to water your plants.