The native fothergillas were choice but scarcely available garden shrubs when Woodlanders first began to offer them back in 1980. This one, a hybrid of Fothergilla gardenii and F. major, was found by Dr. Michael Dirr at the Mt. Airy Arboretum in Cincinnati, Ohio, and has since become the most widely grown fothergilla of all, and deservedly so.
'Sea Spray' has long traveled under the name Fothergilla major, a tidy assumption the botanists have since complicated. Run through a flow cytometer, the plant turns out to be a hybrid, F. × intermedia, the meeting of mountain witch-alder (F. major) and the dwarf coastal F. gardenii, the little shrub Charleston's Alexander Garden sent across to England in the 1760s, in a genus already named for John Fothergill, the London physician who tried to grow half of America in a single garden. All of which makes the name, for once, honest. Most Sea Spray christenings are wishful; this one actually carries the coast in the blood.
This one is named for a doctor and a place. The epithet gardenii honors Alexander Garden, the Scottish physician who settled in Charleston in 1752 and was first to find this shrub, describe the species, and send a plant across to England, the same Garden the gardenia is named for, though this Carolina native may be the truer monument. (The genus belongs to his English correspondent Dr. John Fothergill, in whose garden the shrub later grew; the species is Garden's.) Their home is the southeastern coastal plain, the low acid country of bogs and pine savannahs from the Carolinas to the Florida panhandle and Alabama, scattered and never common, the kind of habitat that disappears quietly.
Fothergilla gardenii is a small deciduous shrub, usually three to four feet tall, and a native of the southeastern coastal plain, where the plant haunts moist, peaty pinelands and bogs. A member of the witch-hazel family, Hamamelidaceae, and a close cousin of the witch-hazels themselves, dwarf fothergilla shares the family gift for honey-scented late-winter and spring bloom on bare or barely-leafed stems.
The native fothergillas were choice but scarcely available garden shrubs when Woodlanders first began to offer them in 1980, and mountain witch alder is the largest and, to our eye, the best of them. Fothergilla major makes a rounded deciduous shrub of six to eight feet, slow and dense, and gives two distinct performances a year. In April the bare or barely-leafing branches carry upright white bottlebrushes, an inch or two long, made not of petals but of crowded stamens with pale yellow anthers, and they carry a honeyed scent that reaches further than the flowers look able to manage. In October the blue-green leaves turn all at once to orange, scarlet and yellow, often several colors on a single leaf.