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Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
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Search by plant name, key attributes or both to find plant details and a list of
AGM plants have been through a rigorous trial and assessment programme. They are:
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Other common names
Californian lilac 'Burkwoodii'
Ceanothus can be evergreen or deciduous shrubs or small trees, with simple leaves and small blue, pink or white flowers in profuse axillary or terminal clusters. They are fast-growing but may be short-lived
Rhamnaceae / Rhamnaceae
'Burkwoodii' is a compact medium-sized evergreen shrub, with shiny rounded or ovate leaves, grey-hairy beneath. Flowers small, rich blue, in rounded clusters to 6cm in length, in late summer and autumn
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.
For full details of the hardiness ratings see
Aspect South-facing or East-facing or West-facing
MoistureWell-drained, Moist but well-drained
SoilLoam, Clay, Sand
Grow in well-drained soil in a sheltered position in full sun
Propagate by semi-hardwood cuttings
Suggested planting locations and garden types
City & Courtyard Gardens
Pruning group 8
Can get scale insects
May be affected by honey fungus and Phytophthora root disease
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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