The garden under the canopy. Shade is not a problem to solve but a place to plant, and these are the ferns, foliage plants, and quiet bloomers that make the cool, dim ground beneath trees and walls into one of the loveliest parts of a garden.
Among the winter-flowering shade shrubs, few reward a cold-season garden as generously as Sarcococca wallichii, the Himalayan sweet box. The genus name joins the Greek sarco, flesh, with kokkos, berry, a nod to the fleshy fruits that follow the flowers, while the species honors Nathaniel Wallich, the Danish surgeon-botanist who superintended the Calcutta botanic garden in the early nineteenth century and sent so many Himalayan plants west. Sarcococca belongs to the box family, Buxaceae, and shares that clan's patience: dense, slow, and evergreen, with the quiet good manners of a plant built for the long haul.
Peacock moss is not a moss at all but a very low, spreading fern relative, a spikemoss whose scale-like leaves clothe trailing stems that root as they run and knit into patches across moist, shaded ground. The great distinction of Selaginella uncinata is color: in good light the foliage takes on an iridescent, metallic blue-green sheen, the peacock shimmer that gives the plant a common name.
Dwarf greenbrier is the gentlest member of a prickly clan. Where most of the greenbriers, the Smilax vines, arm themselves with vicious hooks, Smilax pumila comes up soft and unarmed, a low, scrambling, evergreen groundcover of the Southeastern coastal plain, safe to handle and easy to place. The mottled, arrow-shaped leaves hold a quiet, marbled green through the year, and on female plants clusters of bright orange to red berries glow in the winter undergrowth like drops of fire.
John Bartram collected Xanthorhiza simplicissima from the Carolina mountains sometime before 1776 and brought the plant back to his famous Philadelphia garden, which tells you two things: that yellowroot has been in cultivation for as long as this country has existed, and that people who know plants have always recognized something worth paying attention to here. The Cherokee had known the plant far longer, using the roots, sliced open to reveal a vivid, almost electric chrome yellow, as a dye, a bitter tonic, and a medicine for ailments from mouth sores to stomach complaints. The active compound is berberine, the same antimicrobial alkaloid found in goldenseal, and the roots produce berberine in striking quantity. Xanthorhiza is Greek for yellow root, and the name is no metaphor.
