Home > Featured Articles > Tree of the Month: Regal Prince Oak
Regal Prince Oak is an ideal selection for use as a shade tree in small yards. It grows to a mature height of 40-50 feet with a spread of 18 feet. It features bright green foliage in spring, dark green in summer, golden yellow in fall, and shows off an attractive bark and silhouette during winter.

Tree of the Month: Regal Prince Oak

By Len Phillips, ASLA Emeritus


 


Trade Name: Regal Prince Oak


Botanical Name: Quercus robur x bicolor ‘Long’


Family: Fagaceae


Parentage: Quercus robur x bicolor


Year of Introduction: Earl Cully introduction, 2000


Height: 40 to 50 feet


Spread: 18 feet


Form: Columnar, narrow, upright


Flower: Catkin


Fruit: Acorn


Foliage: Glossy, clean, silvery underside


Spring Color: Bright green


Summer Foliage: Dark green


Autumn Foliage: Golden yellow


 

Photos provided by J. Frank Schmidt & Son Co.Winter Color: Attractive bark and silhouette


Bark: Dark, deeply furrowed


Habitat: Upper Midwest


Culture: Adapts to wide range of soil types, wet and dry tolerant


Site Requirements: Full sun


Hardiness Zone*: 4 to 8 noted for Upper Midwest hardiness


Growth Rate: Slow grower, very long-lived tree


Pest Resistance: Noted for mildew and borer resistance


Storm Resistance: Good


Salt Resistance: Excellent


Planting: Transplant bare root, B&B, or container


Pruning: Prune at planting and 3 years later to mature form


Propagating: Cuttings grafted onto seedling understock


Design Uses: Excellent for street tree and trees in small yards


Other Comments: Ideal selection for shade tree in small yards, suitable for CU-Structural Soil planting


Available From: Select nurseries, may require some searching


 


* For information about the USDA Hardiness Zone Map, visit www.usna.usda.gov/Hardzone/index.html


 


These are the personal observations of the author, living in New England – Zone 5b. Len Phillips can be reached via e-mail at lenphillips@on-line-seminars.com


Photos provided by J. Frank Schmidt & Son Co.

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