Tea of heaven, Ama-tsja,

Hydrangea serrata thunbergii

Physical Characteristics

Hydrangea serrata thunbergii is a deciduous Shrub growing to 1.5 m (5ft). See above for USDA hardiness. It is hardy to UK zone 6 and is not frost tender. It is in flower from July to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained 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. The plant can tolerates strong winds but not maritime exposure.

Distribution

E. Asia - Japan.

Habitats

Woodland Garden Sunny Edge; Dappled Shade; Hedge;

Edible Uses

Edible Parts: Leaves Shoots Edible Uses: Sweetener The young leaves, after fermentation[174], become very sweet and are used to make a sweet tea called 'tea of heaven', it is used in Buddhist ceremonies[11, 46, 61]]. The leaves contain phellodulcin (its chemical formula is C16 H14 O), a very sweet substance that can be used as a sugar substitute[116, 183]. The older leaves can be dried, powdered and used as a flavouring on foods[105, 177]. The young leaves and shoots are also eaten cooked[105, 177].

Medicinal Uses

None known

Known Hazards

None known