Japanese buckthorn

Rhamnus japonica

Physical Characteristics

Rhamnus japonica is a deciduous Shrub growing to 3 m (9ft 10in). See above for USDA hardiness. It is hardy to UK zone 4. It is in flower in May. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. 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.

Distribution

E. Asia - Japan.

Habitats

Woodland Garden Sunny Edge; Dappled Shade; Shady Edge;

Edible Uses

Edible Parts: Leaves Edible Uses: Leaves[105, 177]. No more details but some caution is advised, see the notes above on toxicity.

Medicinal Uses

Emetic Febrifuge Laxative Skin Febrifuge, laxative, skin[46, 61, 178]. The fruit and the bark are emetic and laxative[218].

Known Hazards

Although no specific mention of toxicity has been found for this species, there is the suggestion that some members of this genus could be mildly poisonous[65].