Climbing hydrangea is a handsome woody vine that clings and climbs by attaching itself with tiny rootlets to a wall, trellis, or other support. In early July, it has flat, lacy clusters of fragrant small white flowers that show up well against the glossy green leaves. The horizontal branching pattern can create interesting, sculptural effects against a wall, and the cinnamon-brown bark on older stems peels to create an interesting texture that is attractive in winter. Over the course of years, it may reach 30 to 80 feet in length. This vine can also be used as a ground cover in shady areas.
This plant has some cultivated varieties. Go to list of cultivars.
- Ground cover
- Large plant (more than 24 inches)
- Full sun (6 hrs direct light daily)
- Partial sun/shade (4-6 hrs light daily)
- Full shade (4 hrs or less of light daily)
- Zone 4
- Zone 5
- Zone 6
- Zone 7
- Moist, well-drained soil
- Deciduous (seasonally loses leaves)
- Early winter
- Mid summer
- Late summer
- Early fall
- Mid fall
- Late fall
Size and Method of Climbing
A true clinging vine that can grow 30 to 80 feet long. Clinging vines attach themselves directly to a surface by means of holdfasts (adhesive discs) or by small aerial roots. This type of vine grows best on a flat surface, such as stone, masonry walls and wood.
Needs moist, well-drained soil. Water in dry periods.
Best flowering occurs in full sun but will grow in full shade.
Blooms on old wood. Buds can be damaged by late frosts.
Little pruning required, but prune in late winter to control size.
A true vine, clinging to rough surfaces by root-like fast holds. Can attach to buildings, fences and arbors or spread as a ground cover.
Growth is slow in the first 3 to 5 years, but picks up speed once roots are established.
Disease, pests and problems
No serious problems.
Native geographic location and habitat
Native to Japan, Korea and Siberia.
Bark color and texture
Stems are dark cinnamon brown with exfoliating bark that splits and peels.
Instead of lying flat, the stems develops 3-dimensional branchlets that stick out from the structure it is growing on.
Simple, opposite, broadly oval leaves; 2 to 4 inches long with toothed margins.
Leaves are glossy, dark green in summer, hang on well into fall before changing to a clear yellow.
Large, 6 to 8 inch fragrant, lacecap-type clusters of white flowers in late June to early July.
New plants may take several years to produce flowers.
The actual fruit (a dry capsule) is not ornamentally important, but the remains of the dry flower heads that surround them do provide winter interest.
Cultivars and their differences
Miranda climbing hydrangea (Hydrangea petiolaris 'Miranda'): Variegated form that features serrate, heart-shaped, dark green leaves with yellow margins (can revert to green in summer heat); very little fall color.