hydrangea 'Bläuling'

A compact deciduous shrub to 1m high, with ovate, serrated dark green leaves that turn red in autumn. In summer, broad flat lace-cap flower heads open to clusters of tiny, pale blue fertile flowers surrounded by large, showy florets with scalloped edges. Flower colour varies depending on the pH of the soil; this cultivar produces deep blue flowers on acid soil, but flowers are tinted purple or pink on neutral to alkaline soil