saw-toothed hydrangea

Also known as: Information to be completed

A deciduous shrub, with narrowly ovate, serrated green leaves that often produce good autumn colour. This is a compact species, not usually more than 1.2m high and often much smaller. Flowers are produced from mid to late summer, in domed or flattened heads made up of very small fertile flowers and larger sterile ones. Flower colours range from red to blue depending on the pH of the soil, or sometimes white

saw-toothed hydrangea

Scientific classification

Species
saw-toothed hydrangea (Hydrangea serrata)
Genus
Hydrangea
Family
Hydrangeaceae
Skin allergen. Wear gloves and other protective equipment when handling
Toxicity
Shrubs
Plant type
1-1.5 metres
Height
1-1.5 metres
Spread
Deciduous
Foliage
Bushy
Habit
Autumn · Spring · Summer
Season of interest
Partial shade
Sunlight
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Ideal temperature

saw-toothed hydrangea pictures

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Distribution of saw-toothed hydrangea

Distribution map

Japan and Korea

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Culture

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Toxicity

Skin allergen. Wear gloves and other protective equipment when handling

Quick identification of saw-toothed hydrangea

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saw-toothed hydrangea care guide

Consistently moist root zone, add extra water during warm dry weather
Watering
Partial shade
Sunlight
Information to be completed
Ideal temperature

Watering

Consistently moist root zone, add extra water during warm dry weather

Fertilizing

Hydrangea shrub feed every four weeks spring through early summer

Pruning

Use the method for the hydrangea type: remove faded mophead flowers to the first healthy bud pair; paniculata and arborescens may have last year's stems shortened to healthy bud pairs. Climbing hydrangeas need overlong shoots trimmed after flowering. Most types are pruned in late winter or early spring; climbing hydrangeas are pruned after flowering in summer.

Propagation

Propagate by softwood cuttings in early summer, or by hardwood cuttings in winter

Growing

Grow in moist but well-drained, humus rich soil, in a lightly shaded spot with shelter from cold, drying winds. Mulch annually in spring. Soil additives may be required to maintain specific flower colours. See shrubby hydrangea cultivation for more detailed advice

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Common pests and diseases

Diseases

May be susceptible to a leaf spot, powdery mildews, grey moulds (Botrytis) and honey fungus (rarely)

Pests

May be susceptible to aphids, capsid bug, red spider mite, stem and bulb eelworm, vine weevil and scale insects

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