Description and general information
Sedum cauticola is also known as Hylotelephium cauticolum. It is native to Hokkaido, Japan. This mounding species has partially prostrate stems that reach 15-20 cm. The blue-green, succulent leaves are somewhat rounded with shallowly toothed margins. In late summer, through fall, the stems are terminated by a flattened cluster of numerous, star-like, pink flowers. The cultivar 'Lidakense' is more popular than the species, mainly due to its purple-gray foliage and purple-pink flowers. In winter, this species dies back to a cluster of tiny overwintering rosettes. It is rated hardy to zone 4.
Cultivation
Like the majority of Sedum, this species requires full sun and well-drained soils. Neutral to alkaline soil is best. It is very drought-tolerant. Sedum cauticola is ideal for screes and alpine troughs.
Bloom period
September through October
Propagation
This species is easily propagated by seed, cuttings and division.
Seed
The seed is very fine and should be surface sown on a well-drained media. No stratification is required.
Division
Division is best done early in the season but can be done anytime in the growing season. Plants are easily pulled apart.
Cuttings
Mid-summer cuttings root with abandon. No hormones are required. If moist soil can be maintained outside, then cuttings can be directly rooted in the garden. Otherwise, root them in a loose, well-drained mix such as perlite, sand and a little peat/soil.