Help us achieve our goals:
make a donation »
Join the RHS today and
support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Make a donation
Join the RHS today and support our charity
I have forgotten my password
Keep me signed in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
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:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
© RHS 1997
the RHS today and get 12 months for the price of 9
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
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.
Join the RHS today and get 12 months for the price of 9