Common name/s ?

Twinspur 'Coral Belle'

Skill rating




Type of plant ?

Herbaceous perennial, usually treated as an annual.

Hardiness zone ?

RHS zone

Half hardy

EGF zone

H3 to H4 (may be frost hardy and withstand temperatures down to -5°C)

USDA zone


Eventual size

20cm height by 40cm spread.

Growth rate ?

Fast, will reach full height in a couple of years if grown as a perennial.

Shape it grows into

Slightly straggly, spreading mat of stems growing upright and bearing leaves and flowers.

Season/s of interest

Flowers throughout summer and autumn.

Where to grow it

Happy in full sun or part shade.
Prefers well drained soil.

Prefers humus rich soil.

Diascia 'Coral Belle'


Five petalled,  salmon pink flowers with yellow throats and two ’spurs’ on the reverse. Dark green, heart shaped, opposite leaves provide a good foil for the flowers.

What to use it for

Generally used as an annual in summer bedding or container displays. Can also be used on slopes or in borders. Could be used in cottage style, informal or Mediterranean style gardens.

While strictly speaking this plant is a perennial, it is unlikely to survive the winter in the UK and is generally treated as an annual. If you want to keep it from year to year you’re better off growing it in a container so it can be moved under cover in the winter.

How to look after it

Water regularly in dry periods.

If you intend to keep it as a perennial, protect it from frosts, for example by overwintering it in a greenhouse.

How to prune it

Deadhead regularly or trim lightly after the main flush of flowers to keep it neat and encourage further flowering.

How to propagate it

Take softwood stem-tip cuttings in spring, or in the summer from the re-growth resulting from trimming or deadheading the plant. Protect the cuttings from frost over winter.

Seeds will only be produced by the plant if more than one cultivar or species is grown and are unlikely to come true to type. This does give a good opportunity to have a go at deliberate hybridisation to come up with new variations. Sow seeds at 15˚C, they should flower in the same year.

Common problems

Slugs and snails can be a problem.

Other useful information

Received the Royal Horticultural SocietyAward of Garden Merit‘.

The plant has the common name ‘twinspur’ due to the two spurs which stick out of the back of the flower, and distinguish it from similar flowers such as Nemesia.