All it takes is a bit of rain and this shrub (Leucophyllum sp) explodes into bloom. The entire thing has so many blooms you cannot see the foliage. It is a favorite of bees and butterflies and early in the morning it sounds like the bush is about to be carried off.
I planted only one rain sage years ago, but it has self seeded throughout the yard. I don't mind as it is evergreen, has a decent shape but does need some selective pruning every couple of years, and smells divine when it blooms, lilac-like.