Ceratostigma willmottianum Sapphire Ring - Height 15-20cm - 2lt

Ceratostigma willmottianum 'Sapphire Ring' is a deciduous shrub valued for its striking late-season flowers and colourful autumn foliage. It is a selected cultivar of Ceratostigma willmottianum, a plant native to western China that is widely cultivated in ornamental gardens. This cultivar is particularly appreciated for its intense flower colour and its ability to extend interest in the garden well into autumn.

‘Sapphire Ring’ forms a compact, bushy shrub that typically grows to about 80–100 cm in height with a similar spread. It produces slender, upright stems that gradually create a rounded, slightly spreading habit. The leaves are oval to elliptic in shape with a smooth surface and a fresh mid-green colour during the growing season. As autumn approaches, the foliage develops rich shades of red, bronze and purple, providing an attractive seasonal display that complements the plant’s flowers.

The most notable feature of this cultivar is its brilliant blue flowers. From late summer through to early autumn, clusters of vivid sapphire-blue blooms appear at the tips of the stems. Each flower has five rounded petals arranged in a star-like shape, creating a bold splash of colour against the foliage. The flowers are often surrounded by reddish sepals that remain visible even after the petals fall, adding further decorative interest.

This shrub grows best in a sunny position, although it will tolerate light partial shade. It prefers well-drained soil and performs well in a variety of garden conditions once established. ‘Sapphire Ring’ is suitable for mixed herbaceous borders, gravel gardens, and informal planting schemes where its late flowering period can provide valuable colour when many other plants are finishing.

Pruning is usually carried out in early spring, as the plant flowers on new growth. Cutting the stems back encourages fresh shoots and helps maintain a neat, compact form. With its vibrant flowers, colourful foliage and reliable growth, Ceratostigma willmottianum ‘Sapphire Ring’ is a highly decorative addition to sunny garden borders.