The genus Sedum (sensu lato) is a large and diverse grouping of species. Various molecular studies since 1995 have indicated that many of these species would be better placed within segregate genera - a treatment that is not universally recognized. We have chosen to follow the Flora of China[] and Flora of N. America[] in recognizing these new genera. When the nomenclatural, biogeographic, and morphological data has become available for many other groupings within Sedum, it is likely that more new genera will be established - to date we have transferred a number of species to the genera Hylotelephium. Phedimus and Rhodeola[].

Common Name:

General Information

Sedum oreganum is an evergreen perennial plant up to 0.15 metres tall.
The plant is harvested from the wild for local use as a food. The plant is grown commercially for use in 'green roof' systems, designed to insulate buildings whilst also providing wildlife habitats and improving the environment, and is also grown as an ornamental, where it can be used as a ground cover.

Known Hazards

All species in the genus Sedum (including the closely allied genera such as Hylotelephium and Phedimus) have more or less edible leaves and young flowering stems, though they are not always totally desireable with several species having bitter, acrid or peppery flavours!
However, the plants contain various alkaloids including sedine and sedamine. These can sometimes cause gastric upsets, usually of a mild nature[]. This is most likely to happen with species that have yellow flowers, though eating large quantities of any species could be problematic[, ].

Botanical References

, ,

Range

Western N. America - Alaska, British Colombia, Washington, Oregon, California

Habitat

Rocky islets, rocks on sea cliffs and bluffs, steep rocky slopes; at elevations up to 1,600 metres[]. Chiefly montane on rock ledges, gravelly ridges and talus slopes[].

Properties

Edibility Rating
Other Uses Rating
Habit	Evergreen Perennial
Height	0.15 m
Pollinators	Insects
Self-fertile	Yes
Cultivation Status	Cultivated, Ornamental, Wild

Cultivation Details

Succeeds in most soils[] but prefers a fertile well-drained soil in a sunny position[]. Established plants are drought tolerant[]. Can be grown on a wall[].
All members of this genus are said to have edible leaves, though those species, such as this one, that have yellow flowers can cause stomach upsets if they are eaten in quantity[, ].
Species in this genus are often specially targeted by slugs[].
Plants in this genus seem to be immune to the predations of rabbits[].

Edible Uses

Leaves and young shoots - raw or cooked[, , ].

Medicinal

We have seen no specific reports on medicinal uses for this species, but Sedum species (including Hylotelephium and Phedimus) generally contain various medicinally active compounds including alkaloids, tannins, cyanogenic compounds and, in particular, a range of flavanoids with anti-inflammatory and pain relieving properties. Many Sedum species are used medicinally to treat pain and inflammation - in addition a poultice made from the crushed, succulent leaves and young stems can be applied topically to cuts, wounds, burns and various skin disorders[].

Agroforestry Uses:

Plants can be grown as a ground cover when planted about 25cm apart each way[].
The plant is grown in 'green roof' and 'green wall' systems. These systems are incorporated into the structure of the building, providing habitats for wildlife as well as insulating the building and helping to improve the environment.

Other Uses

None known

Propagation

Seed - surface sow in spring in well-drained soil in a sunny position in a greenhouse. Do not allow the soil to dry out. Prick out the seedlings into individual pots when they are large enough to handle. If sufficient growth is made, it is possible to plant them out during the summer, otherwise keep them in a cold-frame or greenhouse for their first winter and plant them out in early summer of the following year[].
Division is very easy and can be carried out at almost any time in the growing season, though is probably best done in spring or early summer. Larger divisions can be planted out direct into their permanent positions. We have found it best to pot up the smaller divisions and grow them on in a lightly shaded position in a cold frame, planting them out once they are well established in the summer.