Quercus rubra, commonly known as red oak or northern red oak, is a large, deciduous tree native to eastern North America. Known for its fast growth, the tree can reach heights of 50-75 feet with a similar spread and is highly valued as a shade tree. It thrives in acidic, moist, well-drained soils, preferring sandy loams, but can tolerate a variety of soil conditions, including alkaline, dry, and clay soils. It also has a high tolerance for urban conditions, including air pollution and dry sites, making it an excellent choice for streets, parks, and large lawns. While red oak is generally a durable and long-lived tree, it is susceptible to oak wilt, a deadly fungal disease. Prune in the dormant season to prevent attracting beetles that may spread oak wilt. It is also prone to chlorosis in soils that are not sufficiently acidic. Quercus rubra drops acorns and a substantial number of leaves, with the heaviest shedding in the fall.
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Planting Site and Native Range
Planting Site
Naturalization, Parks, Highway, Residential, Wide Median
Management Notes
Management Notes
Acorns can be a litter issue in some years
Tree Characteristics
Growth Rate
Fast (60cm or more per year)
Width
17 - 23m
Height
18 - 23m
Soil Quantity
>30 m
Leaves
Deciduous
Insects and Diseases
Insects and Diseases
No serious or common issues in the urban environment. Wide range of pests in general for oak (Quercus) species that mainly affect its appearance slightly in minor cases. Two lined chestnut borer has been observed to attack and kill stressed Oak trees in Ontario.
Tree Tolerances
Soil Salt Tolerance
Tolerant
Salt Spray Tolerance
Sensitive
Flooding Tolerance
Low
Drought Tolerance
Very High
pH Tolerance
Tolerant of acid to slightly alkaline soil (pH 5.0 to 7.5)
Shade Tolerance
Full Sun
Plant Hardiness Zone
Zone 3 (a/b) | Zone 4 (a/b) | Zone 5 (a/b) | Zone 6 (a/b)