Valued for their striking blue flower panicles, Ceanothus (California Lilac) offer almost everything a gardener could wish for in a shrub: free-flowering, lovely foliage, ease of cultivation, drought and salt tolerance. Fast growing, these spectacular North American native shrubs are quite versatile. Some are evergreen and can be grown against walls or as free-standing shrubs. Others are deciduous or prostrate spreading and suitable as ground cover. When a California Lilac bursts into bloom, it is a dazzling sight to anyone.