Oakleaf Hydrangea 'Tennessee Clone': Superior Form of a Native Favorite

Oakleaf Hydrangea 'Tennessee Clone': A Selected Form of H. quercifolia

The oakleaf hydrangea (Hydrangea quercifolia) is a beloved North American native, and 'Tennessee Clone' represents a superior selection with exceptional floral display and vigorous growth. This cultivar originated from a standout population in Tennessee, selected for its particularly large, showy inflorescences and strong constitution.

Four-Season Appeal

Like the species, 'Tennessee Clone' offers year-round interest. In early summer, massive conical panicles (12–18 inches long) emerge creamy white, gradually aging to antique pink and finally deep rose by late summer. The distinctive oak-shaped leaves—large, deeply lobed, and leathery—turn brilliant shades of burgundy, orange, and crimson in autumn. Exfoliating cinnamon-colored bark provides winter texture.

This selection typically reaches 6–8 feet tall and wide, forming a broad, mounded shrub. It is notably floriferous, with flower heads held upright on strong stems.

Growing Conditions

Oakleaf hydrangeas are among the most adaptable of the genus. 'Tennessee Clone' thrives in full sun to partial shade (more sun tolerant than macrophylla types) and prefers moist, well-drained soil but tolerates periodic drought once established. Hardy in USDA zones 5–9. Blooms on old wood, so prune immediately after flowering if needed.

Taxonomic Profile

• Family: Hydrangeaceae
• Genus: Hydrangea
• Species: quercifolia
• Cultivar: 'Tennessee Clone'

Native Plant Benefits

As a selection of a southeastern U.S. native, this cultivar supports local ecology—providing nectar for pollinators and shelter for wildlife. Its deep root system aids erosion control on slopes. An excellent choice for naturalistic plantings, woodland edges, or mixed shrub borders where its bold texture shines.