Some plants are loved for how they look. Calycanthus floridus is loved for how they smell, which is a different and older kind of attachment. The flowers are strange and handsome in their own right, an inch or two across, dark maroon going toward burgundy, built from many narrow strap-like segments with no clear line between petal and sepal, somewhere between a small magnolia and something from the bottom of the sea. But the reason this shrub has been passed down through Southern gardens for three centuries is what happens when the flowers open on a warm day: a deep fruit-bowl perfume, strawberry and pineapple and ripe banana, that drifts well beyond the plant.
Born of careful hands and watchful eyes at the JC Raulston Arboretum in North Carolina, Calycanthus × raulstonii 'Hartlage Wine' is a sweetshrub of uncommon grace. Richard Hartlage made the cross as an undergraduate at North Carolina State University in 1991, pairing the Southern native Carolina allspice (Calycanthus floridus) with the refined Chinese sweetshrub (Calycanthus chinensis); the seedling first flowered in 1996, and the hybrid name honors J.C. Raulston, the arboretum's late director.
Calycanthus floridus 'Athens', also circulated under the name 'Katherine', is a yellow-flowered selection of the Eastern sweetshrub, a deciduous native of the Southeastern woodlands long grown for fragrance, adaptability, and strange, many-tepaled flowers. Where the wild plant blooms a deep maroon, 'Athens' opens soft, buttery yellow, an unexpected and elegant turn on a familiar shrub.
Calycanthus floridus 'Michael Lindsey' is the sweetshrub gardeners reach for when fragrance is the whole point. The species, Carolina allspice, is a southeastern native beloved for reddish-brown flowers that smell of ripe fruit, but the scent varies wildly from seedling to seedling, and 'Michael Lindsey' was chosen precisely for a rich, dependable perfume. Add glossy dark green foliage and clear golden fall color, and this selection has become a benchmark, one the plantsman Michael Dirr called the standard by which other introductions will be measured.
Calycanthus 'Venus' is a white-flowered sweetshrub bred by Dr. Tom Ranney at North Carolina State University, drawing on three species at once: the Eastern Carolina allspice (Calycanthus floridus), the California sweetshrub (Calycanthus occidentalis), and the Chinese sweetshrub (Calycanthus chinensis, long known as Sinocalycanthus). The result is a deciduous shrub that carries the best of all three: hardiness, substance, and an unusual flower.
