Arbor Age

Arbor Age June 2014

For more than 30 years, Arbor Age magazine has been covering new and innovative products, services, technology and research vital to tree care companies, municipal arborists and utility right-of-way maintenance companies

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34 Arbor Age / June 2014 www.arborage.com B y L e n P h i l l i p s , A S L A E m e r i t u s Common Name: Pin Oak Botanical Name: Quercus palustris Family: Fagaceae Parentage: Native tree Year of Introduction: Before 1770 Hardiness Zone*: 4 to 9 Height: 60 to 75 feet, can go to 100 feet Spread: 25 to 40 feet Growth Rate: Rapid, 12 to 15 feet in 5 to 7 years Form: Pyramidal, lower branches pendulous, middle branches horizontal, upper branches upright Bloom Period: Early spring Flower: Catkins clustered, male and female Fruit: Acorn, 1/2-inch long and wide, thin cap Foliage: Deep lobes, 5-7 Spring Color: Deep green Summer Foliage: Dark green Autumn Foliage: Russet, bronze, red Winter Color: Interest in form Bark: Grayish-brown with small ridges Habitat: Does well in northeastern quarter of North America Culture: Tolerates wet soils, prefers moist, rich, acid well-drained soil, will not tolerate high pH, full sun Growth Rate: One of the fastest growing oaks, less than 2 feet a year Pest Resistance: Attacked by galls, iron chlorosis is a problem with high pH soils Storm Resistance: Excellent Salt Tolerance: Sensitive to salt Planting: Easily transplanted B&B and by containers due to fi brous root system Pruning: Prune in early spring only Propagating: Seed only Design Uses: Useful in large planting areas, parking lots, open spaces, highway medians where pendulous lower branches can be accommodated Companions: Most groundcovers Other Comments: One of the most widely used native oaks for landscaping Available From: Most nurseries * For information about the USDA Hardiness Zone Map, visit http://www.usna.usda.gov/Hardzone/ index.html These are the personal observations of the author, living in New England – Zone 6. Len Phillips can be reached via e-mail at lenphillips@on-line- seminars.com. Pin Oak TREE OF THE MONTH Photos provided by J. Frank Schmidt & Son Co.

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