A deciduous shrub growing to a height of 1.5 to 2 meters. Leaves are opposite, petioled, oblong-ovate, acuminate, light green with serrate margins. Flowers are in large, terminal cymes; clusters up to 12 cm across, blut, pink, or white, with broadly oval sepals.
Thrives well in Baguio and other high altitude areas.
A popular hedge plant.
Properties and constituents
• Considered antiperiodic, antitussive, diuretic.
• Leaves, roots and flowers considered antimalarial, antitussive and diuretic.
• Leaves contain phyllodulcin, a sweet substance that can be
used as a sugar substitute.
• Young leaves, dried and rubbed becomes sweet
• Used to make sweet tea, or "tea in heaven," used in Buddhist ceremonies.
• Leaves are dried, powdered and used as food flavoring.
• Young leaves and shoots can be eaten cooked.
• No known folkloric medicinal use in the Philippines.
• Elsewhere, used for malaria, as diuretic, antitussive.
• Antmalarial Activity:
(1) Study evaluated the antimalarial activity of fractions isolated from the leaves of Hydrangea macrophylla against Plasmodium yoelii. (2) In a study of the leaves of 13 common Japanese plants, the leaf extract of Hydrangea macrophylla inhibited the parasitic growth of Plasmodium falcifarum.
• Phyllodulcin / Water Extraction: A subcritical water extraction, an alternative environmentally friendly extraction method, was developed for the extraction of phyllodulcin, the well known sweetener in Hydrangea macrophylla var. thunbergii.
• Secoiridoid Glycosides: Study isolated seven secoiridoid glycosides from the leaves of H macrophylla subsp. serrata.
• Halofuginone / : Halofuginone, a drug derived from the hydrangea root, shows promise in the treatment of autoimmune disorders, inhibiting the development of Th17 cells in both mice and humans, interrupting processes in autoimmune pathology.