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Bigleaf hydrangeas are no doubt the most popularhydrangeas.
Numerous cultivars of each punch in exist.
Growing two feet or more per year, bigleaf hydrangeas are fast-growing shrubs.
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They should be planted in the fall or early spring.
Hydrangeas are toxic to people and pets.
Planting
Plant in summer or fall when the weather is cooler.
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Backfill with soil and tamp down the soil.
Water deeply to get rid of any air pockets.
If you plant more than one, space the hydrangeas about five feet apart.
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Soil
The soil should be organically rich and moist but well-drained.
Water
If the top few inches of soil feel dry, water slowly and deeply.
Always water the shrub at its base, not from overhead.
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Pruning should be done immediately after flowering.
Propagating Bigleaf Hydrangea
The plants are easy to propagate byrooting stem cuttingsor layering.
Bigleaf hydrangeas need containers with large drainage holes and well-draining potting mix.
Overwintering
If planted in their hardiness range, winter protection is not required.
However, a thick layer of mulch around the base helps to insulate the roots against the winter cold.
Additional fertilizer does not encourage more blooming.
Instead, check that that the plant is grown in suitable conditions.
Aside from pruning promptly after the bloom is over, there is no other care necessary after blooming.
If powdery mildew is an issue in your location, select a resistant variety, such asBloomstruck.
Many of these pests can be managed withinsecticidal soap.
North Carolina State University Cooperative Extension.
