| Shape | Compact and clump-forming. |
| Landscape | Perfect for flower beds and borders, as well as making a beautiful addition to any rock garden. |
| Propagation | Propagate through division in spring or autumn. |
| Cultivation | Grow in full sun or partial shade, in a fertile, moist soil. Is tolerant of wet, boggy soils, but may require staking. It is a good idea to deadhead flower clusters after all flowers have bloomed to extend the flowering period, and cutting back foliage almost to the ground after flowering can encourage new growth. |
| Pests | Young plants may be damaged by snails and caterpillars, but otherwise is generally best and disease free. |
| Notable Specimens | Royal Botanical Gardens, Burlington, Ontario, Canada. |
| Habitat | Horticultural origin. |
| Bark/Stem Description | Stems are stiff, and secret a viscous fluid that becomes thread-like and silky upon hardening (giving the plant its common name). |
| Leaf Description | Leaves are bluish-green, with a lengthwise fold that forms a groove, and are narrowly lance-shaped. |
| Flower Description | Flowers are bright purple, to 1.5 cm in diameter, with three petals, appearing in terminal clusters. Although many buds appear on each cluster, flowers tend to bloom only a few at a time for approximately one day each. |
| Fruit Description | A small capsule. |
