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Hydrangea quercifolia

Hydrangea quercifolia, Photo: Michael Lahanas

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Ordo: Cornales

Familia: Hydrangeaceae
Subfamilia: Hydrangeoideae
Tribus: Hydrangeeae
Genus: Hydrangea
Species: Hydrangea quercifolia

Hydrangea quercifolia W.Bartram

Travels Through North and South Carolina, Georgia East and West Florida, ... 382. 1791
USDA, ARS, Germplasm Resources Information Network. Hydrangea quercifolia in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
English: Oakleaf hydrangea

Hydrangea quercifolia, commonly known as oakleaf hydrangea or oak-leaved hydrangea, is a species of flowering plant in the family Hydrangeaceae.[2] It is native to the southeastern United States, in woodland habitats from North Carolina west to Tennessee, and south to Florida and Louisiana.[3] A deciduous shrub with white showy flower heads, it is grown as a garden plant, with numerous cultivars available commercially.

Its specific epithet combines the Latin words quercus ("oak"), and folium ("leaf"). However, it is not closely related to oak species (Quercus).


Hydrangea quercifolia is a coarse-textured deciduous shrub growing to 3–12 feet (0.91–3.66 m)[4] tall with an open crown. The plant sprouts shoots from underground stolons and often grows in colonies. Young stems are covered in a felt-like light brown bark, and the larger stems have attractive cinnamon-tan-orange bark that shreds and peels in thin flakes.

The leaves are yellowish green to dark green on top and silvery-white underneath. They have three, five or seven pointed lobes and are 4–12 in (10.2–30.5 cm) long and almost as wide. They vaguely resemble larger versions of oak leaves, similar to Quercus species with lobed foliage. Plants in shade have larger leaves than those grown in sun. The leaves turn rich shades of red, bronze and purple in autumn that persist in winter accompanying the persistent dried flower-heads.

Hydrangea quercifolia flowers are borne in erect panicles 6–12 in (15.2–30.5 cm) tall and 3–5 in (7.6–12.7 cm) wide at branch tips. Flowers age in colour from creamy white, aging to pink and by autumn and winter are a dry, papery rusty-brown.

Unlike bigleaf hydrangea (Hydrangea macrophylla), flower color does not vary with soil pH.

Hydrangea quercifolia and Hydrangea paniculata are the only hydrangeas with cone-shaped flower clusters; all the others have their flowers in ball-shaped or flat-topped clusters, called umbels.[5]
Distribution and habitat

Native to continental southeastern North America, it grows in mixed hardwood forests, along streams and on forested hillsides, usually on calcareous soils, and often where limestone is at the ground surface. It is an understory shrub, often in the shade of large oaks, hickories, magnolias, American beech, etc.
Hydrangea quercifolia4normanack.jpg
Garden history

Hydrangea quercifolia was noted by 18th-century botanist William Bartram in his botanizing exploration from the Carolinas to the Florida panhandle in the 1770s.[6] It was slow to enter British and American gardens. In Britain it flowers less profusely and even has a reputation for being tender.[7]

Hydrangea quercifolia is cultivated as an ornamental plant in gardens and parks. Though frequently seen as an isolated subject in gardens, it is at its best in a natural or landscaped woodland habitat against the backdrop of larger shrubs and trees. It prefers partial to almost full shade, with morning sun and afternoon shade as optimal. It will tolerate drought, but may not flower. It prefers slightly acidic soils with a pH of 5.0–6.5. In the UK the cultivars Snowflake=‘Brido’[8] and Snow Queen=‘Flemygea’[9] have gained the Royal Horticultural Society's Award of Garden Merit.[10]

Its hardiness is USDA Zones 5–9, with 'Snow Queen' hardy to Zone 5, while some other cultivars may not be.[11] Propagation is via cutting or division; short sections of clustered stems with some root attached will make a small shrub in a nursery row.

Fresh or dry, the blossoms of Hydrangea quercifolia are attractive as cut flowers.

Hydrangea quercifolia was declared the official state wildflower of Alabama in 1999.[12]

Spring leaf shoots


"NatureServe Explorer".
"Hydrangea quercifolia - Plant Finder". Retrieved 2021-03-02.
"Lady Bird Johnson Wildflower Center - The University of Texas at Austin". Retrieved 2021-03-02.
"Lady Bird Johnson Wildflower Center - The University of Texas at Austin". Retrieved 2019-01-18.
Alice Coats, Garden Shrubs and Their Histories (1964) 1992, s.v. "Hydrangea".
{{cite web | url = | title = RHS Plantfinder - Hydrangea quercifolia {{{1}}}
"RHS Plantfinder - Hydrangea quercifolia Snow Queen='Flemygea'". Retrieved 7 March 2018.
"AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 51. Retrieved 3 March 2018.
"Hydrangea quercifolia (Oak Leaf Hydrangea, Oakleaf Hydrangea) | North Carolina Extension Gardener Plant Toolbox". Retrieved 2021-03-02.
State Botanical SymbolsBy Alan McPherson, p.3

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