FNPS Plant Database

Quercus incana

bluejack oak
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS

Nomenclature

Common Name:

bluejack oak

Synonym(s):

Genus species:

Quercus incana

Family:

Fagaceae

Plant Specifics

Form:

Tree

Size:

Small tree. , Can be a shade tree for small yards

Life Span:

Long-lived perennial

Flower Color:

inconspicuous

Fruit Color:

brown

Phenology:

Deciduous

Noted For:

Landscaping

Recommended Uses:

Small tree in sandhill and other sandy-loam settings.

Considerations:

Does not handle root disturbance well (is noted for disappearing if land is managed by rollerchopping).

Availability:

Propagation:

Light:

Moisture Tolerance:

Always Flooded---------------------------------Extremely Dry

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Short very dry periods -to- Very long very dry periods

Salt Water Flooding Tolerance:

Unknown

Salt Spray/Salty Soil Tolerance:

Low/no tolerance of salty wind or direct salt spray

Soil or Other Substrate:

Soil pH:

Acidic

Suitable to Grow In:

USDA zones are based on the average annual extreme minimum winter temperature.

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Vouchered In:

Distribution
Vouchered
Not vouchered
Selected
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No county distribution is available for this plant yet.
Starting…
Map coded by Melissa Fernandez-de Cespedes (Paynes Prairie Chapter)

Ecology

Wildlife:

Caterpillars, Birds, Mammals

Importnt food source for some species of moths and butterflies.

Acorns provide food for selected birds, squirrels, raccoons, and deer.

Native Habitats:

Sandhill

Natural Range in Florida:

Comments:

Ethnobotany:

Has been used for a number of medicinal uses. Astringent.

General Comments:

FNPS Plant Print

Citations:

North Carolina State Extension. (Undated). North Carolina Extension Gardener Plant Toolbox. ( https://plants.ces.ncsu.edu/ ). North Carolina Agricultural & Technical University, Greensboro, NC.


Ruter, John M, and Bodie V. Pennisi. (2017). Selecting Salt-Tolerant Native Trees for the Georgia Coast (Bulletin B-1477). ( https://fieldreport.caes.uga.edu/publications/B1477/selecting-salt-tolerant-native-trees-for-the-georgia-coast/ ). Accessed 2026. College of Agricultural and Environmental Sciences, University of Georgia, Athens, GA.


Sullivan, Janet. (1994). Quercus incana , bluejack oak [in] Fire Effects Information System. ( https://research.fs.usda.gov/feis/species-reviews/queinc ). Accessed 2026. U.S. Forest Service, U.S. Dept. of Agriculture.

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