Alphabetical Plant Listing

Hydrangea macrophylla 'Merritt's Supreme'

Bigleaf Hydrangea 'Merritt's Supreme', Mophead Hydrangea 'Merritt's Supreme', Hortensia 'Merritt's Supreme'


Hydrangea macrophylla 'Merritt's Supreme' is a compact and dense mophead hydrangea with huge, rounded flower heads, packed with intense, rich purple-blue to deep rosy-pink florets, depending on the soil pH. Blooming from mid summer to early fall, the bold blossoms are held aloft on thick stems. They turn a lovely plum color in the fall, further extending the season of interest of this plant. The foliage is dark green with large, glossy, serrated leaves. 'Merritt's Supreme' is perfect as a specimen or in small groupings, anywhere in the landscape that gets morning or filtered sun. Great cultivar for containers too! The size and longevity of the flowers make 'Merritt's Supreme' hydrangea an excellent choice for flower arrangements.

  • This deciduous shrub enjoys a round habit, typically growing 3-4 ft. tall and wide (60-120 cm).
  • A sun to part shade lover, it is best grown in rich, medium moisture, well-drained soils. Full sun is tolerated if constant moisture is provided.
  • No serious pest or disease issues. Watch for bud blight, bacterial wilt, leaf spot and mildew.
  • Perfect from foundation plantings to container plantings. Massed in a sheltered location or as an accent plant. Effective as an hedge and makes excellent cut flowers too!
  • Remove spent flowers to promote new blooms.
  • 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).
  • 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.

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Requirements

Hardiness 6 – 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 (Mid,Late)
Fall
Height 3' – 4' (90cm – 120cm)
Spread 3' – 4' (90cm – 120cm)
Spacing 48" (120cm)
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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aggray / 123RF Stock Photo

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 6 – 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 (Mid,Late)
Fall
Height 3' – 4' (90cm – 120cm)
Spread 3' – 4' (90cm – 120cm)
Spacing 48" (120cm)
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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