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.

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Grew very tall here and very wide. Allow sufficient room for its quick expansion.

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