Quercus alba - White Oak - Fall Colour
Quercus alba - White Oak
Quercus alba - White Oak - Photo courtesy of J. Frank Schmidt & Son Co.
Quercus alba - White Oak - Photo courtesy of J. Frank Schmidt & Son Co.

White Oak

Quercus alba

  • Pyramidal when young, maturing to a wide-spreading, rounded crown
  • Leaves have deep rounded lobes, emerging pinkish in the spring, maturing to dark green
  • Insignificant flowers(catkins) are followed by oval acorns
  • Fall colours are brown to shades of dark red

ZONE:
3

COLOUR:
Green

HEIGHT:
18-22 m

SPREAD:
18-22 m

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Growing and Maintenance Tips:


A slow-growing large specimen shade tree at maturity, it needs a large space in which to grow.  

Do not prune Oaks during the growing season. Oaks are highly susceptible to Oak Wilt, which is spread by a sap beetle that is attracted to fresh wounds. Prune oaks only during the dormant season in winter after the leaves have fallen. Oak Wilt can kill a mature Oak within one season. 

Additional Notes about White Oak:


Native to Ontario and parts of North America. Larval and foliar host for over 500 species of insects! White Oak acorns are less bitter than Red Oak acorns, so a preferred food for wild turkeys, jays, mallards, grouse, and of course, squirrels and chipmunks. When desperate, deer and rabbits will browse the young twigs. The flaky bark provides cover for many insects and spiders, which attract and feed more birds.

Characteristics & Attributes


GROWTH RATE:
Slow
ATTRIBUTES:
Fall Color
Deciduous
Seed
FLOWERING TIME:
Spring
FOLIAGE COLOR:
Green
Red
LANDSCAPE USES:
Naturalizing
Specimen
PH TOLERANCE:
Moderate (up to 7.5)