Hydrangea macrophylla Onyx™ Flamingo
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Hydrangea macrophylla Onyx™ Flamingo

Onyx™ Flamingo Hydrangea, Bigleaf Hydrangea Onyx™ Flamingo, French Hydrangea Onyx™ Flamingo, Mophead Hydrangea Onyx™ Flamingo, Hydrangea macrophylla 'KLAHYFLA', Onyx™ Series


Hydrangea macrophylla Onyx™ Flamingo is a compact, bushy deciduous shrub boasting large, baby-pink mophead flowers. Blooming from early to late summer, the long-lasting blossoms are borne on sturdy black stems and contrast nicely with the healthy foliage of rounded, serrated, dark green leaves. This bigleaf hydrangea is perfect for foundation plantings, mixed borders, perennial gardens and patio containers. Great choice for flower arrangements too!

  • Grows up to 50 in. tall (125 cm) and 20 in. wide (50 cm)
  • A sun to part shade lover, it is best grown in rich, medium moisture, well-drained soils. Tolerant of sun if the soil remains moist.
  • Perfect from foundation plantings to container plantings. Massed in a sheltered location or as an accent plant
  • No serious pest or disease issues. Watch for bud blight, bacterial wilt, leaf spot and mildew.
  • Remove spent flowers to promote new blooms.
  • To change the color of your Hydrangea, 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)
  • This beautiful deciduous shrub should be pruned 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 in early summer or hardwood cuttings in winter.
  • Hydrangea macrophylla species is native to Japan. It is reported from seaside habitats as well as mountains in Japan, from Honshu southwards. This species has naturalized in China, New Zealand and the Americas.
  • 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 5 – 9
Heat Zones 6 – 9
Climate Zones 3, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Shrubs
Plant Family Hydrangeas
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Fall
Height 4' – 5' (120cm – 150cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 24" – 36" (60cm – 90cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Dried Arrangements, Cut Flowers, Showy
Garden Uses Beds and Borders, Hedges and Screens, Patio and Containers, Small Gardens
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden

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Concept Plants

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 5 – 9
Heat Zones 6 – 9
Climate Zones 3, 3B, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1
Plant Type Shrubs
Plant Family Hydrangeas
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Fall
Height 4' – 5' (120cm – 150cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 24" – 36" (60cm – 90cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Dried Arrangements, Cut Flowers, Showy
Garden Uses Beds and Borders, Hedges and Screens, Patio and Containers, Small Gardens
Garden Styles City and Courtyard, Informal and Cottage, Traditional Garden

Great Plant Combination Ideas with Hydrangeas

Guides with Hydrangeas

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