Quercus alba: White Oak
Latin name: Quercus alba
Common name: White Oak
Flowers: Not showy, monoecious, 4-7 lobed calyx enclosing stamen8.
Fruit: ¾ to 1 in. nut, ovoid-oblong8
Height & Width: 50-60’ high and wide8
Habit: Upright rounded8
Wetland indicator category** :FACU17
Growth rate: Slow to medium8
Light: Full sun8
Moisture: Dry to medium12
Soil*: Deep, moist well-drained soils, pH 5.5 to 6.58
Zones: 3 to 98
Origin: Maine to Florida, west to Minnesota and Texas8
Ecosystem benefits: Provides habitat and forage for wildlife (large nuts)8
Features: Upright rounded structure, brown to red fall color. Ashy gray bark arranged in scales8.
Siting: This tree belongs in areas with a plentiful amount of soil space for the broad root system8. The white oak is not a very urban tree and does not tolerate impervious surfaces well. This tree requires full sun and well-drained soils8.
Care: Plant crown at soil level18. At planting, water the roots and surrounding area slowly and deeply. Keep soil moist until plant is established, then apply enough water to thoroughly moisten the root zone when the soil is dry or during drought. Modify water recommendations to reflect site drainage and rainfall. Apply 3” of mulch over the planted area. Do not allow mulch to touch the plant stems18. Transplant balled and burlapped when the tree is young, plant in a deep, moist, well-drained, acidic soil8.
Pests: Anthracnose, bacterial leaf scorch caused by Xyella fastidiosa, gypsy moth, yellow-necked caterpillar, pin oak sawfly, saddleback caterpillar, oak skeletonizer, Asiatic oak weevil, two-lined chestnut borer, flatheaded borer, leaf miner, oak lace bug and oak mite8.
This plant does not appear on the following invasive plant lists on (3/2/19):
- USDA SC Invasive Plant Species Web site at http://www.invasivespeciesinfo.gov/plants/main.shtml
Author: Jonathan Jones
Image source: https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwjCqb6gxPHgAhWGPN8KHdsjCxIQjRx6BAgBEAU&url=http%3A%2F%2Fcommunity.homedepot.com%2Fhowto%2FDiscussionDetail%2FWhite-Oak-Quercus-alba-906500000000LIN&psig=AOvVaw1iXmkgK2yaCh-DWnQQAs0O&ust=1552099699662928
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*Soil pH is determined using a professional soil test. Contact your Clemson University County Extension service for assistance www.clemson.edu/extension/. Click on “local offices”.
**2012 Plant Wetland Indicator categories (quantitative derived) http://plants.usda.gov/wetinfo.html
|Indicator Code||Indicator Status||Comment|
|OBL||Obligate Wetland||Almost always is a hydrophyte, rarely in uplands|
|FACW||Facultative Wetland||Usually is a hydrophyte but occasionally found in uplands|
|FAC||Facultative||Commonly occurs as either a hydrophyte or non-hydrophyte|
|FACU||Facultative Upland||Occasionally is a hydrophyte but usually occurs in uplands|
|UPL||Obligate Upland||Rarely is a hydrophyte, almost always in uplands|