Quercus rubraRed oak
科:壳斗科
Family:Fagaceae
属:栎属
common name:Red oak
introduce:Plant Type: Tree
Family: Fagaceae
Missouri Native: Yes
Native Range: Eastern North America
Height: 50 to 75 feet
Spread: 50 to 75 feet
Bloom Time: May
Bloom Color: Yellowish-green
Sun: Full sun (only)
Water: Dry to medium moisture
Maintenance: Low
General Culture:
Easily grown in average, dry to medium wet, acidic soil in full sun. Prefers fertile, sandy, finely-textured soils with good drainage.
Noteworthy Characteristics:
A medium sized, deciduous tree with a rounded to broad-spreading, often irregular crown. Typically grows at a moderate-to-fast rate to a height of 50-75 (often larger in the wild). Dark, lustrous green leaves (grayish-white beneath) with 7-11, toothed lobes which are sharply pointed at the tips. Leaves turn brownish-red in autumn. Insignificant flowers in separate male and female catkins appear in spring. Fruits are acorns (with flat, saucer-shaped cups) which mature in early fall. An abundant crop of acorns may not occur before this tree reaches 40 years old. A Missouri native tree which typically occurs on northern- and eastern-facing wooded slopes throughout the State. Also commonly called northern red oak.
Problems:
Generally a durable and long-lived tree. Susceptible to oak wilt which is a systemic fungal disease that has no cure. Chlorosis (yellowing of the leaves while the veins remain green) often occurs when soils are not sufficiently acidic.
Uses:
Specimen, street tree, lawn tree.
