Autumn Joy Sedum
Hylotelephium spectabile
Also called: Showy Stonecrop
Autumn Joy Sedum. Hylotelephium spectabile, formerly Sedum spectabile and commonly called showy stonecrop or 'Autumn Joy' sedum, is a clumping succulent perennial native to China and Korea. Thick fleshy leaves form upright mounds 18–24 inches tall, topped by broccoli-like flower heads that open dusty pink in late summer and age to copper-rust through fall — a critical late-season nectar source.
Growing & care
- Sun: full sun for sturdy upright stems. In part shade, plants flop open from the center.
- Water: low. Drought-tolerant once established; weekly soaks for the first season.
- Soil: average to lean, well-drained. Rich, moist soil produces top-heavy growth that splits.
- Hardiness: USDA zones 3–9 — exceptionally cold-hardy.
- Spacing: 18–24 inches apart.
- Chelsea chop: in late May or early June, cut the entire plant back by one-third with hedge shears. The plant rebounds shorter, denser, and self-supporting — preventing the classic mid-summer flop.
Propagation
Divide established clumps every 3–4 years in early spring as new growth emerges. Stem cuttings root effortlessly: take 4-inch tips in summer, strip lower leaves, and stick directly into moist potting mix. Single leaves placed flat on soil also root and form new plants.
Common problems
Flopping is the universal complaint — addressed with the Chelsea chop or by avoiding rich soil and afternoon shade. Crown rot follows poor drainage and overhead irrigation. Aphids cluster on flower buds; a strong hose spray dislodges them. Resistant to deer and rabbits, and non-toxic to dogs and cats per ASPCA listings. Leave dried flower heads standing through winter for visual interest and beneficial insect overwintering habitat.
Autumn Joy Sedum — seeds, tools & books
Native range
Native range not recorded for this plant. Often a non-native cultivar or naturalized garden plant.
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