Growing Ceanothus:
Desert Lilac
Description
Form: Shrub.
Lifespan: 20-25 years.
Leaf retention: Evergreen.
Growth rate: Slow to moderate.
Mature Size: 4-9' (1.2-2.7m) high and 6' (1.8m) wide.
Flowers: Clusters of small white, pink, or dark blue flowers exude a strong lilac scent that lasts for weeks.
Bloom: Late winter, spring or summer.
Fruit: Flesh on the small, round fruit turns green to red to brown. When the fruit dries in mid spring, signalling seed maturity, the four-chambered, woody seed capsule immediately drops from the plant. The capsule springs open weeks or months later, tossing four tiny, glossy black seeds over a foot-wide area.
Leaves: Small to medium, oval, thick, medium green or dark green. Yellow leaves may briefly appear and drop as new leaves are produced in late winter or early spring.
Stems: New stems are pinkish, older stems are light gray to brown. No thorns for the species described.
Roots: Nitrogen-fixing*.
Species of Note:
Toxic / Danger: No.
Origin: Native to the Southwestern United States and Mexico.
Form: Shrub.
Lifespan: 20-25 years.
Leaf retention: Evergreen.
Growth rate: Slow to moderate.
Mature Size: 4-9' (1.2-2.7m) high and 6' (1.8m) wide.
Flowers: Clusters of small white, pink, or dark blue flowers exude a strong lilac scent that lasts for weeks.
Bloom: Late winter, spring or summer.
Fruit: Flesh on the small, round fruit turns green to red to brown. When the fruit dries in mid spring, signalling seed maturity, the four-chambered, woody seed capsule immediately drops from the plant. The capsule springs open weeks or months later, tossing four tiny, glossy black seeds over a foot-wide area.
Leaves: Small to medium, oval, thick, medium green or dark green. Yellow leaves may briefly appear and drop as new leaves are produced in late winter or early spring.
Stems: New stems are pinkish, older stems are light gray to brown. No thorns for the species described.
Roots: Nitrogen-fixing*.
Species of Note:
Ceanothus pauciflorus - Desert Ceanothus. Covered by white flowers when
blooming late winter to early spring, tolerates summer rain, usually ignored by deer.
Ceanothus integerrimus - Deerbrush. Flowers colored white, pink,
or dark blue, blooms mid spring into summer, larger glossy leaves, tolerates
summer rain, browsed by deer.
Ceanothus 'Blue Jeans' - Holly Leaf Mountain Lilac. Blue flowers,
blooms spring into summer, tolerates high temperatures, summer drought and alkaline soil,
does not tolerate summer rain or irrigation, very tough, ignored by deer.
Wildlife: The seed attracts quail and other ground-feeding birds. The flowers of
C. integerrimus attract bees and butterflies, and may host moth or butterfly caterpillars.
Toxic / Danger: No.
Origin: Native to the Southwestern United States and Mexico.
Cultivation and Uses
USDA hardiness zones: 7-9.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun.
Soil: Very well draining, dry, low organic content, pH 6.1-8.5 (slightly acidic to alkaline). *Do not fertilize, especially avoid fertilizer containing nitrogen.
Water once established: Once every two months if rain has been absent. Do not overwater. 'Blue Jeans' cannot be watered in the summer after the first year. Yellow leaves mean too much water or the plant has been fertilized.
Mulch: Do not use organic mulch which will prevent the soil from drying quickly and will add unwanted nitrogen.
First Year Care: Deep watering every 2-4 weeks in the first year, including summer, helps to establish a deep, voluminous root system that will withstand heat and drought. In following years, the plant may exist on rainfall alone.
Planting: Ceanothus can be placed on a mound or slope to improve drainage. Adding mineral laden soil, such as decomposed granite, during planting will speed growth.
Prune: Immediately after seed capsules have dropped and no other time. Flowers appear on last season's growth. Fall or winter pruning eliminates flowers the following spring.
Litter: Low.
Propagation: Seed.
Uses: Fragrance garden, bird garden.
USDA hardiness zones: 7-9.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun.
Soil: Very well draining, dry, low organic content, pH 6.1-8.5 (slightly acidic to alkaline). *Do not fertilize, especially avoid fertilizer containing nitrogen.
Water once established: Once every two months if rain has been absent. Do not overwater. 'Blue Jeans' cannot be watered in the summer after the first year. Yellow leaves mean too much water or the plant has been fertilized.
Mulch: Do not use organic mulch which will prevent the soil from drying quickly and will add unwanted nitrogen.
First Year Care: Deep watering every 2-4 weeks in the first year, including summer, helps to establish a deep, voluminous root system that will withstand heat and drought. In following years, the plant may exist on rainfall alone.
Planting: Ceanothus can be placed on a mound or slope to improve drainage. Adding mineral laden soil, such as decomposed granite, during planting will speed growth.
Prune: Immediately after seed capsules have dropped and no other time. Flowers appear on last season's growth. Fall or winter pruning eliminates flowers the following spring.
Litter: Low.
Propagation: Seed.
Uses: Fragrance garden, bird garden.
Comments
These plants are members of the Buckthorn family (Rhamnaceae). Trouble-free and low maintenance, they thrive on neglect.
The best way to kill these plants is to fertilize them, water them frequently, or use organic soil amendments or mulch.
Do you have additional information or a different experience for these plants that you would like to share? Email info@GardenOracle.com. All contributions are welcome and appreciated.
These plants are members of the Buckthorn family (Rhamnaceae). Trouble-free and low maintenance, they thrive on neglect.
The best way to kill these plants is to fertilize them, water them frequently, or use organic soil amendments or mulch.
Do you have additional information or a different experience for these plants that you would like to share? Email info@GardenOracle.com. All contributions are welcome and appreciated.
Latest update: September, 2024
© 2008-2024 by GardenOracle.com