,
Species Native to Missouri
Common Name: overcup oak
Type: Tree
Family: Fagaceae
Zone: 5 to 9
Native Range: Central and southern United States
Height: 40 to 60 feet
Spread: 40 to 60 feet
Bloom Time: March to April
Bloom Color: Red, Yellow
Bloom Description: Yellow catkins (male); Red spikes (female)
Sun: Full sun
Water: Medium to wet
Maintenance: Low
Flowers: Flowers not Showy
Leaves: Good Fall Color
Fruit: Showy Fruit
Tolerates: Clay Soil, Wet Soil
Uses: Erosion Control, Shade Tree
Culture
Winter hardy to USDA Zones 5-9 where it is best grown in acidic, moist to wet loams in full sun. Tolerates some part shade but not full shade. Tolerates wet poorly drained soils and occasional flooding.
Noteworthy Characteristics
Overcup oak gets its common name from the distinctive bur-like acorn cup that typically encloses 2/3 to almost all of the nut. It is a medium sized deciduous oak (part of the white oak group) that typically grows to 40-60' tall with a straight trunk and broad rounded crown. This is a bottomland tree that is native to floodplain forests, lowlands, and along swamps and bayous in the southeastern U.S. It is particularly prevalent in coastal plain swamp forests from Texas to Florida north to New Jersey and up the Mississippi River valley to Missouri, southern Illinois and Indiana. Ornamentally insignificant flowers bloom in March or April (males in slender yellow catkins to 4-6" long and females in short few-flowered reddish spikes). Deep green leaves (6-10” long and to 4" wide) with fuzzy white undersides each have 5-9 deep rounded lobes. Leaves turn shades of yellow-brown (sometime with orange and red) in fall. Female flowers give way to acorns (to 1" long) which mature in September to October. Overcup oaks usually do not begin bearing acorns until 25-30 years old. Slightly shaggy gray to grayish-brown bark on mature trees is reminiscent of white oak. Quercus from Latin means oak. Lyrata comes from the Latin word lyre (stringed instrument) in reference to the lyre-shaped leaves.
Problems
No serious insect or disease problems. Oaks in general are susceptible to a large number of diseases, including oak wilt, chestnut blight, shoestring root rot, anthracnose, oak leaf blister, cankers, leaf spots and powdery mildew. Potential insect pests include scale, oak skeletonizer, leaf miner, galls, oak lace bugs, borers, caterpillars and nut weevils.