Alphabetical Plant Listing

Hydrangea macrophylla 'Altona'

Bigleaf Hydrangea 'Altona', French Hydrangea 'Altona', Mophead Hydrangea 'Altona'


Very floriferous and smothered in bloom, Hydrangea macrophylla 'Altona' produces large, rounded flower heads, up to 8 in. across (20 cm), densely packed with French blue or rosy-pink florets, depending on the soil pH. In soils that are neither strongly acid nor alkaline, the blossoms turn a charming pinky-mauve shade with white centers. Blooming from early to late summer, its flowers change to lovely antique colors in the fall, extending the season of interest of this mophead hydrangea. The profuse blossoms appear on a compact, bushy plant, adorned with broadly ovate, dark green leaves. 'Altona' is happy in sun or shade and is a perfect choice for windy or coastal gardens. Popular as an indoor plant, it looks equally fabulous as a specimen or in small groupings in the garden. Great choice for flower arrangements too!

  • Recipient of the prestigious Award of Garden Merit of the Royal Horticultural Society for its noteworthy qualities
  • This deciduous shrub enjoys a round, bushy habit, typically growing up to 4-5 ft. wide (120-150 cm)
  • A sun to part shade lover, it is best grown in rich, medium moisture, well-drained soils.
  • 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.
  • 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.

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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 (Early,Mid,Late)
Fall
Height 4' – 5' (120cm – 150cm)
Spread 4' – 5' (120cm – 150cm)
Spacing 60" (150cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Dried Arrangements, Cut Flowers, Plant of Merit, Showy
Garden Uses Beds and Borders, Hedges and Screens, Patio and Containers, Small Gardens
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage, Traditional Garden

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spetenfia / 123RF Stock Photo, © Martin Ogden and www.teddingtongardener.com

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 (Early,Mid,Late)
Fall
Height 4' – 5' (120cm – 150cm)
Spread 4' – 5' (120cm – 150cm)
Spacing 60" (150cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Dried Arrangements, Cut Flowers, Plant of Merit, Showy
Garden Uses Beds and Borders, Hedges and Screens, Patio and Containers, Small Gardens
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage, Traditional Garden

Great Plant Combination Ideas with Hydrangeas

Guides with Hydrangeas

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