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We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
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.
When using this search
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:
© RHS 1997
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Other common names
hardy blue-flowered leadwort blue ceratostigma
Ceratostigma larpentiae Plumbago larpentiae
Ceratostigma can be evergreen or deciduous shrubs or herbaceous perennials, with simple leaves which usually colour well in autumn, and short terminal or axillary spikes of salver-shaped blue flowers in late summer and autumn
C. plumbaginoides is a low-growing herbaceous perennial with spreading roots, forming a mat of stems bearing oval leaves which turn red or purple in autumn. Clusters of rich blue flowers from late summer
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect South-facing or East-facing
MoistureMoist but well-drained, Well-drained
SoilLoam, Sand, Chalk, Clay
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in moderately fertile, moist but well-drained soil in full sun
Propagate by rooting softwood cuttings in spring or propagate by semi-hardwood cuttings in summer
Suggested planting locations and garden types
Banks and Slopes Flower borders and beds Wall-side Borders
City & Courtyard Gardens Cottage & Informal Garden Mediterranean Climate Plants
Pruning Cut back to ground level any shoots that get frost damaged
Pests Generally pest free
May be subject to powdery mildews
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
hardy blue-flowered leadwort
Buy from £4.99
at the RHS Plants Shop
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Join the RHS today and get 12 months for the price of 9