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Physical description: This Climbing herbaceous plant has a high-carpet,
rooting habit when unsupported. The deciduous leaves are opposite,
dark green, broadly oval, and reach 2 to 4 in. long by 1 ½
to 3 in. wide. The edges are often toothed. Flowering occurs
in late spring to early summer. Flowers are attractively fragrant,
dull white to snowy white, reach 1 to 1 ½ in., and are
borne in clusters. Fruit is non-ornamental, but the flower clusters
are attractive and persist after the flowers fade away and dry
out.
Optimal growing conditions: Climbing hydrangea performs best in acidic to
neutral, well-drained soils with a high fertility. It is moderately
drought resistant, and prefers slight to moderate shade; if the
soil is kept moist, full sun is acceptable. The growth can be
very slow until the plant is established. To help establishment,
water amply during the first year, and fertilize each spring.
When the plant is established, the growth rate is moderate. Winter
hardiness: Zones 5 to 8.
Susceptibility to pests and diseases: Aphids, two-spotted spider mite, rose chafer,
scales, leaf tier, nematodes, and even rabbits may cause some
damage. Stem rot, bud blight, leaf spot, rust, and powdery mildew
are the main disease problems.
Use:
This plant is usually encountered as a climber on trees or rocks
in rock gardens, but can also be used as a good groundcover species
when unsupported.
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