Quercus × warei 'Long' [sold as Regal Prince®]
Regal Prince Oak

 Plant Type:
 Growth Forms:
 Hardiness:
 Deciduous / Evergreen:
 Flower Notes:
Yellow (Yellow-green, monoecious catkins; spring; not ornamentally important)
 Foliage Notes:
Green (Dark green, leathery, glossy summer foliage); Yellow (Yellow-brown fall foliage)
 Fruit Notes:
Brown (1" long acorns in the fall)
 Ultimate Height:
40-60 feet
 Ultimate Spread:
20-25 feet
 Light Requirements:
 Soil Notes:
Prefers moist, slightly acidic, well-drained soils, but is fairly adaptable
 Range:
Hybrid origin
 Diagnostic Characteristics:
Leaves grow up to 7" long and are alternate, simple, and obovate with 6-8 pairs of rounded lobes. The 1" long, oval to elliptic acorns are borne on 1-3" long stalks and emerge in the fall.

Additional Information

The Regal Prince Oak is notable for its resistance to powdery mildew and borers, strong vertical, columnar form, and tolerance to wind and ice. Holds its dense, fastigiate form into old age.

When Quercus × warei 'Long' [sold as Regal Prince®] has been observed flowering or fruiting at Purdue University

Flowering

JanFebMarAprMayJunJulAugSepOctNovDec

Fruiting

JanFebMarAprMayJunJulAugSepOctNovDec

30 Quercus × warei 'Long' [sold as Regal Prince®] found

Building Map...

Loading...

Other plants like this Quercus × warei 'Long' [sold as Regal Prince®] (Regal Prince Oak)

The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Physical Facilities Grounds Department

Purdue Arboretum, 625 Agriculture Mall Dr, West Lafayette, IN, 47907
© 2025 Purdue University | An equal access/equal opportunity university | Integrity Statement | Copyright Complaints | Maintained by the Purdue Arboretum
Contact Purdue Arboretum at arboretum@purdue.edu for accessibility issues with this page | Accessibility Resources | Contact Us