Rock Pine
Orostachys japonica
Family: Crassulaceae
What it is like
Orostachys japonica is a BIENNIAL/PERENNIAL growing to 0.1 m (0ft 5in). It is in flower from September to October. The species is hermaphrodite (has both male and female organs). Suitable for: light (sandy) and medium (loamy) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
Height (m): 0.1
Where it is found
Surface of mountain rocks in Korea.Rocks on low mountains, along streams in China.
E. Asia - northern China, Japan, Korea.
Conservation Status:
Countries/locations it is found in
How it is used
Food
Rating: 0
Medicine
Rating: 2
The leaves and stems contain several medically active constituents including fatty acid esters and flavonoids. They are antispasmodic and cytotoxic. In Korea they are used in the treatment of cancer, gingivitis and metritis.
Antispasmodic: Relaxes muscular spasms and cramps, calming nervous irritation.
Cancer: Used in the treatment of cancer.
Other
Rating:
How it is grown
We have very little information on this species and do not know if it will be hardy in Britain. However, judging by its native range, it is likely to succeed outdoors in most areas of the country. The plant is generally a biennial, flowering and then dying in its second year. However, it often produces offsets by which it perennates. It also freely produces seed. The following notes are based on the general needs of the genus. Requires a position in full sun in a gritty well-drained soil.
Propagating it: Seed - sow spring in a greenhouse. Germination is usually free and rapid. Prick out the seedlings into individual pots as soon as they are large enough to handle and plant out in the summer. Consider giving some protection from the wet during winter.
Best place to grow: Cultivated Beds;
Habit: Biennial/Perennial
Hardiness:
Growth:
Soil: Light (sandy), medium
Shade: Semi-shade, no shade
Moisture: Moist