Woodland Stonecrop

Woodland Stonecrop

Woodland Stonecrop, Sedum ternatum, is a low, creeping succulent native to the eastern United States, including Maryland, where it grows on shaded rock ledges, stream banks and damp woodland slopes. Its rounded, fleshy leaves, up to about ¾ inch long, are arranged in whorls of three along trailing stems that root where they touch the ground. Over time the plant knits into a dense mat 3–6 inches tall and 6–12 inches wide.

From April into June, upright stems 4–8 inches tall carry three-branched clusters of starry white flowers, each about ½ inch across with dark-tipped stamens. Bees and butterflies visit the blooms. Once flowering ends, the mat of fresh green leaves remains the main feature, and the foliage often stays green through winter. It is well suited to rock gardens, the tops of stone walls, woodland paths and the ground beneath trees and shrubs.

Unlike most sedums, Woodland Stonecrop prefers partial to full shade and grows well in moist soil, provided the soil drains. It tolerates some sun, along with drought, heat, shallow rocky ground and thin soil over limestone, and it is rarely browsed by deer or rabbits. Soggy, poorly drained sites are the main thing to avoid, since constantly wet conditions can rot the stems.

Care Instructions:

Planting: Plant in spring or early fall in a partly to fully shaded spot, setting plants at the same depth they grew in the pot.
Soil: Grows in average, rocky, sandy or clay soil that drains well; thin soil over rock or limestone suits it.
Watering: Water regularly through the first season while the stems root in, then water only during long dry spells.
Fertilizing: No regular fertilizer is needed; a light layer of compost or leaf litter is enough in lean soil.
Pruning: Trim off spent flower stems after bloom if a tidier mat is wanted; no other pruning is required.
Spacing: Space plants approximately 6–12 inches apart; the creeping stems will meet and form a continuous groundcover.
Maintenance: Pull rooted pieces from the edge of the mat to fill bare spots, and check for slugs and snails in damp weather.

Gardeners choose Woodland Stonecrop because it brings the low, tidy texture of a sedum to shady places where most stonecrops struggle. It is a dependable native for woodland gardens, rock walls and paths, and it fills small gaps between stones without crowding neighboring plants. It performs best in partial to full shade with soil that stays moist but never waterlogged.

Landscape Solutions:

• Its tolerance of shade and moist soil makes it a sedum that can carpet woodland beds and the ground under trees and shrubs.
• Creeping, rooting stems spread over rocks and soil to cover shaded slopes, banks and the tops of stone walls.
• A low height of 3–6 inches lets it edge paths and fill gaps between stepping stones without blocking the way.
• Deer and rabbits rarely browse it, so it holds up in shady native plantings where other groundcovers are eaten.
• Starry white spring flowers provide nectar for bees and butterflies in shaded native gardens.