California lilac

California lilac plants should be watered deeply once a week, providing about 1.5 inches of water per week. During summer months however, they may require more frequent irrigation during periods of extreme heat, every 5-7 days. Generally, they should be watered with more frequency when the soil feels dry to the touch. When irrigating, slowly apply water until it starts to trickle or run off the soil near the base of the plant, allowing for a thorough soaking. Also, water the entire root zone to ensure even distribution of moisture. Proper drainage is important, as California lilacs don't usually tolerate standing water.

California lilac (Ceanothus pallidus 'Marie Simon') requires full sun in order to thrive. It prefers 6-8 hours of direct sunlight each day, with afternoon shade in especially hot climates. This plant prefers to be grown in temperate regions of California, where the sun is not as intense as in other parts of the country. Additionally, California lilac should be planted in a spot that is sheltered from strong winds.

California lilacs, also known as blueblossom, should be pruned once a year, usually in late winter or early spring. This plant should be lightly pruned, leaving only a third of its original size. When pruning, ensure that the new growth at the base of the plant is not disturbed and that any dead wood is removed. The flowers should not be deadheaded as they provide food for beneficial insects and birds. For best results, use hand clippers or lopping shears to shape the shrub. Pruning California lilacs will result in thicker, more compact plants with improved flower production.