Hydrangea zhewanensis is a species of flowering plant in the family Hydrangeaceae, native to China.
Hydrangea zhewanensis is a small shrub, which may be deciduous or evergreen, growing up to in height. Branchlets are brownish, densely pubescent when young. Bark peels off into fragments. Flowers are blue, oblong-ovate, 2.5âÂÂ3 mm. Flowers grow in clusters, usually comprising small, fertile and also more showy sterile flowers. Seed capsules are oblong-ovoid, measuring about 3 mm in diameter. Seeds are brown, ellipsoid to oblong, compressed, measuring 0.5âÂÂ0.7 mm, shortly winged at both ends.
Flowers June to July, fruits October to November.
Sparse forests or thickets along stream banks in valleys or on mountain slopes, from .