Quercus hemisphaerica

This is one of William Bartram's oaks. He came upon the tree on his travels through the southeastern backcountry in the 1770s, and the botanical name still carries his hand, Quercus hemisphaerica Bartram ex Willd., the species epithet meaning half-a-globe, for the little domed cap that sits like a skullcap on the acorn.

The trade calls them Darlington oak. Whatever the name, these are the dry-land half of a long-running confusion: the laurel oaks come in two kinds, and where Quercus laurifolia takes the wet bottoms, hemisphaerica takes the high, sandy ground, the longleaf sandhills and dry hammocks, flowering a couple of weeks behind the swamp cousin. The leaves are the surprise on an oak, narrow and smooth-edged and willow-slim, glossy and laurel-like, with never a lobe in sight.

The trees are semi-evergreen, holding that polish straight through winter and trading the old leaves for new only as spring pushes them off, so a Darlington oak is never quite bare. What sells them is speed: they throw shade fast, which is why so many southern streets and squares are roofed in them. The honest catch is the other end of that bargain, since a fast oak is rarely a thousand-year oak, and these tend to soften and decline where the long-lived white oaks would still be hitting their stride.

Plant Darlington oak for the shade you want in this decade, not the next century, and the tree will not disappoint: a fast, near-evergreen canopy for a Southern lawn, street, courtyard, or naturalistic planting on high, sandy ground. Give full sun and sharp drainage, allow room for a fifty- to seventy-foot crown, and pair with other sandhill and dry-hammock natives. The acorns feed jays, squirrels, deer, and turkeys, one more reason the tree earns a place in a wildlife-minded Southern garden.