petiolaris is the climbing version of the common hydrangea. It is deciduous, hardy and vigorous, and can reach as high as 15m (50 ft). It climbs like ivy, by aerial on its . In June it produces masses of flat, white dumps of , similar to elder flowers. Also known as the Japanese hydrangea. It likes a shady site – a north wall is ideal.
General care: Plant in the spring in well-drained soil which has had plenty ofadded to it. The young plants need some care. They must be given stick support until their aerial start working, and kept well watered if the weather is dry. Once they are established they need very little attention beyond light in the winter or spring to keep them tidy. A well-established plant is self-supporting.
Propagation: Cuttings of nonflowering shoots, about 7.5- 10 cm (3-4 inches) long, taken in early summer and put in a 50-50 mixture of peat and sand willby autumn.
Pests and diseases: This plant is usually trouble-free.