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Position

Sun Exposure:
Full sun
Aspect:
South facing, west facing
Position in Border:
Back, middle

Soil

Chalky / Alkaline / Clay / Heavy / Moist / Well Drained / Light / Sandy

Ceanothus ‘Cynthia Postan’ is a beautiful Californian lilac, bearing masses of rich blue flowers in early summer. Hardy and evergreen, it's perfect for growing in a mixed or shrub border, where its blooms attract a wide range of pollinators. It can be trained against a wall or fence or grown as a small standard shrub.

Grow Ceanothus ‘Cynthia Postan’ in well-drained soil in full sun, particularly near a south- or west-facing wall which will provide additional shelter from cold winds and frost. Learn more in our Ceanothus grow guide.

Explore other varieties of California lilac:

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Plant calendar

JanFebMarAprMayJunJulAugSepOctNovDec
Plantyesyes
Flowersyesyesyes
Take cuttingsyesyesyes

Ceanothus ‘Cynthia postan’ and wildlife

Ceanothus ‘Cynthia postan’ is known for attracting bees and butterflies/moths. It has nectar/pollen rich flowers.

Is known to attract Bees
Bees
Is not known to attract Beneficial insects
Beneficial insects
Is not known to attract Birds
Birds
Is known to attract Butterflies/​Moths
Butterflies/​Moths
Is not known to attract Other pollinators
Other pollinators

Is Ceanothus ‘Cynthia postan’ poisonous?

Ceanothus ‘Cynthia postan’ has no toxic effects reported.

No reported toxicity to:
Is not known to attract Birds
Birds
Is not known to attract Cats
Cats
Is not known to attract Dogs
Dogs
Is not known to attract Horses
Horses
Is not known to attract Livestock
Livestock
Is not known to attract People
People
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