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

Quercus × warei ′Long′ [sold as Regal Prince®] - Overall Tree in Summer

Family:

Fagaceae (Beech Family) 46

Genus:

Quercus (Oak) 33

Plant Type:

Tree 569

Growth Forms:

Columnar 47

Hardiness:

USDA Zone 4 515

Deciduous / Evergreen:

Deciduous 836

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

Fruiting Times:

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.

Special Characteristics:

Pest and/or Disease Resistant 96

Wind Tolerant 25

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.

Plant Photo Gallery

Overall Tree in Summer

Bark

Flower Bud

Leaf

Bark

Foliage

Summer Habit

Acorn

Winter Habit

Quercus × warei ′Long′ [sold as Regal Prince®] - Bud

Bud

Winter Habit

Mature Flowers

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

Flowering

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

Fruiting

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

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

Building Map...

= Heritage plant = Memorial plant

Number	Accession ID	Location
1	ORIG_8680*A	PGW
2	ORIG_8679*A	PGW
3	ORIG_8677*A	PGW
4	ORIG_8681*A	PGW
5	ORIG_8678*A	PGW
6	ORIG_8684*A	PGW
7	ORIG_9734*A	LAMB
8	ORIG_8685*A	PGW
9	ORIG_8666*A	PMU
10	ORIG_8682*A	PGW
11	ORIG_8683*A	PGW
12	ORIG_9733*A	LAMB
13	2013_00016*A	YONG
14	ORIG_8667*A	PMU
15	2023_00405*A	PMU
16	2023_00405*B	PMU
17	2023_00454*A	MJIS
18	2023_00454*B	MJIS
19	2023_00454*C	MJIS
20	2023_00454*D	MJIS
21	2023_00604*A	FLEX
22	2023_00604*B	FLEX
23	2023_00604*C	FLEX
24	2023_00620*A	FLEX
25	2023_00620*B	FLEX
26	2024_00271*A	LYNN
27	2024_00271*B	LYNN
28	2024_00271*C	LYNN
29	2024_00271*D	LYNN