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Ceratostigma willmottianum 'Forest Blue'Chinese Plumbago

3 Options from £15.99

Hardy Shrub
What is Hardy Shrub?
Woody plant, usually having a permanent framework of branches.
Capable of withstanding outdoor winter temperatures down to -15C.
1 x 3.6 litre potted ceratostigma plant £15.99 Despatch: by end of September 2019
2 x 3.6 litre potted ceratostigma plants £27.99 Despatch: by end of September 2019
2 x 10 litre potted ceratostigma plants £49.99 Out of Stock
Please note: This product cannot be delivered outside the United Kingdom.
Description How to Grow More Info Delivery Video
Expert Recommendation from Peter Freeman - "This shrub deserves every part of its RHS award; not only is it easy to grow but the flowers and the foliage provide stunning colours to the garden border all the way into autumn. The flowers are the most blue I have ever seen – a cracking plant!"

This popular deciduous shrub well deserves its RHS AGM. Wiry red-tinted stems play host to a profusion of cobalt-blue flowers from August to October. As autumn progresses the green summer foliage turns to vivid shades of burnt orange and red, bringing a welcome splash of colour to fading borders. Ceratostigma willmottianum 'Forest Blue' is a low, spreading shrub that merits a prominent position toward the front of a sunny border or even planted against a wall. Height: 100cm (39"). Spread: 150cm (59").

Plant height and spread is seasonal therefore we list by pot size rather than a defined plant size. The height and spread of the plant delivered will vary depending on the season, meaning arrival images are an indication only.

Walls And Fences, Cottage Gardens


Full sun

Up to 100cm (39.4in)

Up to 150cm (59.1in)

Easy for all

Easy for all


Thompson & Morgan strives to ensure that all its plants are delivered to you in the perfect condition for planting. Sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this, so regretfully we are unable to ship live plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3

1 x 3.6 litre potted ceratostigma plant (66117)
2 x 3.6 litre potted ceratostigma plants (T66609P)
2 x 10 litre potted ceratostigma plants (T67895P)

Flowering Months
Ceratostigma plants require little maintenance throughout the year. Simply cut back the stems to within 3cm (1") of the previous year’s growth in early spring.
Grow Ceratostigma plants in light, fertile, well drained soil. Choose a sunny position that remains reasonably moist throughout the growing season.


Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £1.95.

Orders which include any other products will incur a delivery charge of £4.95.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.90 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

Satisfaction Guaranteed

For your complete peace of mind, our Home and Garden products may be returned to us within 30 days of purchase for a refund of the purchase price. Items must be returned unused, at your cost and in mint condition. All items carry a manufacturer's 12 month defects warranty.