Answer: I'd go with native plants. They are low care, low water use plants that thrive in local growing conditions. Some to consider include Arctostaphylos, Mama Bear Manzanita which about 8 ft tall and 6 ft wide. It has very attractive dark red bark and light pink flowers. It takes about 3 years to reach it's full height. Or, Ceanothus, Ray Hartman Mountain Lilac. Ray Hartman Ceanothus can grow anywhere from 6 to 15 ft tall. It grows very fast. It reaches full sized, from a gallon sized container, in about 3 years depending on the location. It grows OK in sand or clay soil. It makes a nice evergreen hedge with fragrant flowers and not a lot of effort.
Cercocarpus alnifolius, Island Mountain Mahogany is excellent for tall narrow hedges. It grows about 12 feet tall and only 3 or 4 feet wide. It is evergreen and nice looking. It reaches full sized in around 3 years. Deer like to eat it so don't plant it if you are in a high deer area. It will grow in decomposed granite or clay.
Heteromeles arbutifolia, Christmas Berry, is an evergreen shrub that grows about 12 feet tall. Depending on how happy it is, it may reach its full hight anywhere from one year to seven. In winter it is covered in red berries that are popular with birds. It tends to be a bit wide, usually around 6 feet. So give it some room. It will grow in sand or clay. It is denser and shorter if grown in the sun.
Hope one of these suggestions is just right for your landscape.
Q&A Library Searching Tips