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Ceanothus impressus Puget Blue


California Lilac

Evergreen shrub with deep blue flowers

Medium sized and evergreen, this variety of Californian Lilac has exceptionally deep blue flowers which cover the plant in clusters in April and June.


Enjoys a sunny and sheltered spot, ideally with a south or west aspect, either in a border or against a wall.


It will grow well in fertile, well drained soils and is hardy but needs to protecting from cold, drying winds. After it flowers it will benefit from a mulch and a light pruning.

Californian Lilacs have a lifespan of 10-15 years and can be vulnerable to honey fungus, but are relatively low maintenance and wildlife friendly.

Plant details

In depth plant information

Property Value
Plant type Ornamental shrub
Flower colour
Foliage colour
Typically available March - September
Season of interest Spring, Summer
Flowering April - June
Evergreen Yes
Plant height 150 cm - 250 cm
Plant width 150 cm - 250 cm
Fragrant flowers No
Attracts bees No
Attracts butterflies No
Plant height in 5 years 200 cm
Hardiness zone (?) H3

Will perform best in these conditions

Property Value
Soil type Clay, Loam, Sand
Light exposure Full sun
Soil drainage Moist, Well drained
Planting instructions

Water the plant in its pot thoroughly before planting – give it a good soaking. Prepare the area by digging a hole twice the size of the pot. Dig compost into the base of the hole. Remove the pot and position the plant in the hole, with the top of the rootball about level with the surrounding soil. Refill the planting hole with a mixture of garden soil and compost, firming as you go. Water in well and keep well watered during the plant's first year.

Planting site Gravel garden, Mediterranean garden, Cottage garden, Informal garden, Coastal or drought resistant, City garden, Courtyard garden, Garden edging, Flower border and beds, Banks and slopes

Typically available

From March to September