Hydrangea aspera subsp. sargentiana (Sargent Hydrangea)
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Hydrangea aspera subsp. sargentiana (Sargent Hydrangea)

Sargent Hydrangea, Hydrangea sargentiana


Hydrangea aspera subsp. sargentiana (Sargent Hydrangea) is an upright, rounded, deciduous shrub of open habit with peeling bark, sturdy shoots and very large, velvety ovate leaves, up to 10 in. long (25 cm). In mid summer to early fall, large, lacecap flower clusters, 8 in. across (20 cm), bloom for a couple of months. They feature small, purple or blue fertile flowers surrounded by white ray flowers. This hydrangea adds a touch of elegance to a lightly shaded border.

  • Grows up to 3-6 ft. tall and wide (90-180 cm).
  • Performs best in part shade in rich, evenly moist, well-drained soils. Prefers sunny mornings and shady afternoons.
  • Perfect for foundation plantings, shrub borders, hedges.
  • Keep an eye out for aphids, capsid bug, hydrangea scale, leaf spot.
  • Blue in acidic soils, the flowers turn pink in alkaline soils. To change their color, add aluminum sulfate to the soil to make the flowers bluer or add lime to the soil to make them pinker. Treatment should occur ahead of time (late fall or early spring).
  • Remove spent flowers to promote new blooms.
  • Little or no pruning required. Prune after flowering by cutting back the stems to a pair of healthy buds. Prune out weak or winter-damaged stems in early spring.
  • Propagate by softwood cuttings.
  • Hydrangea aspera subsp. sargentiana is native to China.
  • May cause mild stomach upset if ingested, contact with foliage may aggravate skin allergies. Wear gloves and other protective equipment when handling.
  • Toxic to dogs, toxic to cats, toxic to horses.

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Requirements

Hardiness 7 – 8
Heat Zones 7 – 8
Climate Zones 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Shrubs
Plant Family Hydrangeas
Exposure Partial Sun
Season of Interest Summer (Mid,Late)
Fall
Height 3' – 6' (90cm – 180cm)
Spread 3' – 6' (90cm – 180cm)
Spacing 36" – 72" (90cm – 180cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles City and Courtyard, Informal and Cottage

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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 7 – 8
Heat Zones 7 – 8
Climate Zones 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Shrubs
Plant Family Hydrangeas
Exposure Partial Sun
Season of Interest Summer (Mid,Late)
Fall
Height 3' – 6' (90cm – 180cm)
Spread 3' – 6' (90cm – 180cm)
Spacing 36" – 72" (90cm – 180cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Showy
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles City and Courtyard, Informal and Cottage

Great Plant Combination Ideas with Hydrangeas

Guides with Hydrangeas

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