RED OAK(Quercus rubra)
10 - 23 centimetres long.7.5 - 15 centimetres wide. Oval-shaped; elliptical. 7 - 11 shallow wavy lobes with a few irregular bristle-tipped teeth.Usually dull green above. Dull light green beneath with tufts of hairs in angles along midvein. Turning brown or dark red in fall. Acorns:
- 1.5 - 2.8 centimetres long.
- Less than 1/3 of acorn is enclosed by a reddish-brown, broad cup.
- Rounded; blunt.
- Tightly overlapping scales.
- Maturing second year.
- Moderately stout.
Dark gray or blackish Rough. Furrowed into scaly ridges. Inner bark reddish. Height:
- 18 - 27 metres.
- 0.3 - 0.8 metres.
- Rapid-growth, grows faster than most oaks.
- 8- to 10-foot tree reaches a height of 20 feet in five or six years.
Species Requirements Distribution Range:
W. Ontario to Cape Breton Island, south to Georgia, west to E. Oklahoma, and north to Minnesota.
The northernmost eastern oak.Grows in Zones 2 to10.
Grows mixed with other broadleaf trees and eastern white pine; stunted on dry rocky ridges toward the northern limit of its range. Preferred Light:
Nearly all oaks need full sun.
Intolerant. Preferred Soil:
Prefers moist, acidic, well-drained, rich, deep soil. Will grow in moist, loamy, sandy, rocky, or clay soils.
- Grows well in moist soils.
- Strumella canker.
- Armillaria root rot.
- Powdery mildew.
Red Oak borer. Oak skeletonizer.
Intolerant of competition and shade, although moderately shade-tolerant when young.
Squirrels use the tree for home and food.
- A popular, handsome, shade and street tree.
- Good form and dense foliage.
- Transplants easily.
- Hardy in city conditions; withstands pollution.
- Endures cold.
- Healthy, dependable trees.
- Branches are strong enough to resist damage from ice, wind, snow.
- Long life span.
Avoid pruning from spring through summer due to insect or disease problems. Best time to prune is in the months of November and December.
- Prune young trees in winter or early spring; old trees seldom need pruning.
When planting an oak, one must learn how to transplant the tree, how to space the tree, what species to plant beside it, consider its roots and the affect they might have in an urban setting, and set up a pruning and fertilizing schedule.
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