Scientific Name: Quercus phellos
Common Name: willow oak
Family Name: Fagaceae
Origin: U.S. - central, U.S. - southwest
Hardiness Zone: Zone 6: (-23 to -18 °C)
Plant Type: Tree - deciduous
Mature Size: 15 - 22m x 7 - 10m (height x width)
Habit: Dense, Pendulous, Spreading, Twiggy, Upright
Form: Oval - vertical, Pyramidal - widely
Texture: Medium - fine
Landscape Uses: Screening, Shade tree, Specimen plant, Tall background, Wetland - bogs, Wind break
Exposure: Full sun, Part sun/part shade
Soil or Media: Well-drained
Leaves: Simple, Alternate, Soft flexible, Pinnate venation, Glabrous, Lustrous, Elliptic, Lanceolate, Oblong, Entire, Undulate (wavy)
Flowers: Catkin (ament), Green-yellow, Mar
Fruit: Nut, Yellow, Brown, May
Key ID Features:
Twiggy, horizontal oak tree; leaves alternate (may appear whorled at stem tips), lanceolate to narrowly elliptic-oblong, most blades 8-12cm long x 1.5-2.5cm wide; margin entire to wavy; petioles 2-5mm long. Winter ID: persistent or fallen leaves; twigs narrow, glabrous; terminal buds ovoid, pointed, appear clustered, reddish-brown, about 2mm long; leaf scars raised, half-round with scattered bundle scars.