California lilac Ceanothus divergens Rating: 0.0 ( 0 votes) This description is for California lilac (Ceanothus divergens): The distinctly toothed, oval-shaped leaves of ceanothus divergens, which is commonly known as calistoga ceanothus are a very eye-catching feature in and of themselves, while also serving as a pretty backdrop to this shrub’s striking blue or purple flowers that are produced in dense clusters. Calistoga ceanothus appreciates a well-drained loamy or sandy soil and is best grown in an area that receives full sunlight, though it will grow in partial shade too. This shrub is fantastic for incredible-looking groundcover and also looks delightful at the edge of a woodland garden. Find California lilac in our Shop! Free shipping from € 50! Plant Environment Usage Known dangers? Acidity Standard category no Neutral Trees & shrubs Alkaline Shrubs Height [m] Hardiness zone Grown for 1 Z8-10 Attractive Flowers Spread [m] Heat zone Creative category 1.5 H10-8 Kid Approved For Beginners Colours For every season Dominant flower colour Winter temperatures [°C] Garden type Blue -12 - 4 Cottage garden Coastal City Mediterranean garden Gravel garden Plant Environment Usage Flower Fragrance Heat days Garden spaces No, neutral please 90 - 180 Walls, trellises and pergolas Borders Flowering seasons Moisture Gardening expertise Early spring well-drained beginner Mid spring well-drained but frequently watered Late spring Foliage in spring Soil type Time to reach full size Green sandy up to 10 years chalky loams Foliage in summer Sun requirements Green Full sun Foliage in Autumn Exposure Green Sheltered Foliage in winter Green Propagation methods semi-ripe cuttings seed Growth habit Spreading .