Ceanothus

For the shade, try Heuchera maxima, a cream flowering coral bell that looks great under oak trees and needs very little water.

There are many species of Ribes, both evergreen and deciduous.  A very nice evergreen species is Ribes viburnifolium with roundish, dark green leaves and dark red stems.  It needs no irrigation, making it ideal for planting under oaks.  It grows three to six feet tall and can spread to twelve feet. A lovely deciduous species is…

Trichostema lanatum (woolly blue curls) grows to three to five feet high and four to eight feet wide.  The dark green leaves are pungent when bruised.  The purple flowers are fuzzy and appear in spring.  The plant will continue to bloom during summer and autumn if it is deadheaded.  Trichostema takes full sun and needs…

Heteromeles arbutifolia, or toyon, is an evergreen native shrub with thick, leathery leaves.  The flat heads of white flowers in spring attract bees and the bright red berries that follow are favored by birds.  Toyon usually grows as a dense shrub to six to ten feet tall and wide, but can also be trained as…

Prunus lyonii (Catalina Cherry) and Prunus ilicifolia (Holly leaf Cherry) are two evergreen shrubs that are extremely useful as screens or background plants. They both have red berries in late summer which the birds find very desirable.  

Zauschneria, or California fuschia, is a low spreading plant with green, grey or silvery foliage and orange to scarlet flowers.  Bloom occurs in late summer or autumn and the flowers are very attractive to hummingbirds.  The plant is fast growing and drought tolerant, but as with most plants, it looks better with occasional water.  It…