Sourwood (Oxydendrum arboreum)

Sourwood

Oxydendrum arboreum, the lone species of its genus, is a native tree of eastern North American woodlands and streams. It forms a pyramidal tree to 30 feet tall with canoe‑shaped, glossy leaves that turn vivid maroon, yellow, or purple in autumn. In late summer, delicate panicles of fragrant, urn‑shaped white flowers spray forward, followed by yellowish seed capsules that persist into winter.

Key Features

• Outstanding fall color: maroon, yellow, purple.
• Fragrant white lily‑of‑the‑valley‑like flowers in late summer.
• Decorative seed capsules persist into winter.
• Native, attractive bark.

Growing Conditions

Moist, well‑drained, acidic soil in full sun or partial shade (blooms best in full sun). Prefers a protected site. Prune only to maintain a healthy framework.

Care & Propagation

Sow seed in a cold frame in autumn; take semi‑ripe cuttings in summer. Problems: leaf spots.

Landscape Uses

Specimen tree, beds and borders, waterside; meadow and woodland gardens.

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