General Plant Information (Edit)
Plant Habit: Shrub
Sun Requirements: Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Soil pH Preferences: Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 3 to 6 feet
Plant Spread: 4 to 6 feet and more
Leaves: Deciduous
Fruit: Dehiscent
Flowers: Showy
Blooms on new wood
Flower Color: White
Flower Time: Late spring or early summer
Uses: Provides winter interest
Cut Flower
Wildlife Attractant: Bees
Resistances: Rabbit Resistant
Flood Resistant
Propagation: Other methods: Cuttings: Stem
Stolons and runners
Pollinators: Hoverflies
Moths and Butterflies
Containers: Suitable in 3 gallon or larger
Miscellaneous: Tolerates poor soil
Patent/Plant Breeders' Rights: PBR10,977; PP14,168

Trade name information:
Trade Name: White Dome®
Cultivar name: 'Dardom'
Common names
  • Smooth Hydrangea
  • Wild Hydrangea
  • Sevenbark
  • Hydrangea

Photo Gallery
Photo by PollyK
Location: Morton Arboretum in Lisle, IL
Date: 2021-06-24
a group in bloom
Location: Morton Arboretum in Lisle, IL
Date: 2021-06-24
flowers and foliage
Location: Porch garden
Date: 2010-0716
Location: Porch garden
Date: 2010-0716
Location: Porch garden
Date: 2010-0716
Location: Porch garden
Date: 2010-0716
This plant is tagged in:
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  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Dec 26, 2020 1:40 PM concerning plant:
    This is a newer cultivar, first called 'Dardom,' of the Wild Hydrangea from eastern North America that was selected by Woulter Kromhout in Essen, Belgium. It came about from two unidentified selections of the species that crossed by natural pollination in 1997. It is a little showier than the mother species in bloom, the flower clusters are domed a little and less flat, and it grows to be a smaller shrub up to 5.5 feet high by 7 feet wide. It has slightly larger leaves than the average Wild Hydrangea and some silvery hair beneath the foliage. It is noted as holding its firm stems up well and not drooping. It bears flowerheads about 6 to 10 inches across mostly with the small, fertile florets, and some showy infertile florets. Therefore, it is loved by pollinators like the mother species. I finally came across a group of it planted along a building at Morton Arboretum in Lisle, IL that had a label sign. I did not notice the sign at the time and did not realize it was 'White Dome' until I reviewed my plant photo collection and saw the sign on the computer. 'White Dome' is offered by the huge Proven Winners nursery company that offers a huge array of diverse cultivars of shrubs, perennials, and annuals one can find in most conventional nurseries and garden centers. It was patented in September 2003. It should be able to grow in a wide pH range of 6.0 to 8.5 like the mother species in moist, mesic to draining wet soils.
  • Posted by pirl (Southold, Long Island, NY - Zone 7a) on Aug 24, 2014 9:25 AM concerning plant:
    Grew very tall here and very wide. Allow sufficient room for its quick expansion.
Discussion Threads about this plant
Thread Title Last Reply Replies
OOOps! wrong location listed by ILPARW Aug 6, 2022 4:43 PM 2

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