Blackjack Oak

Quercusmarilandica

Family
Fagaceae (fag-AY-see-ee)
Genus
Quercus (KWER-kus)
Species
marilandica (mar-i-LAND-ih-ka)
Synonym
Sun Exposure
Full Sun
Foliage
Grown for foliage
Deciduous
Height
20-30 ft. (6-9 m)
30-40 ft. (9-12 m)
over 40 ft. (12 m)
Spacing
30-40 ft. (9-12 m)
over 40 ft. (12 m)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Parts of plant are poisonous if ingested
Bloom Color
Brown/Bronze
Inconspicuous/none
Bloom Time
Mid Spring
Other Details
Category
Trees
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
Patent Information
Non-patented
Propagation Methods
From seed; direct sow outdoors in fall
Seed Collecting
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Atmore, Alabama

Pelham, Alabama

Morrilton, Arkansas

Keystone Heights, Florida

Benton, Kentucky

Georgetown, Kentucky

Louisville, Kentucky

Weeksbury, Kentucky

Pasadena, Maryland

Perkinston, Mississippi

Egg Harbor City, New Jersey

Lawnside, New Jersey

Neptune, New Jersey

Matthews, North Carolina

West End, North Carolina

Pauls Valley, Oklahoma

Tecumseh, Oklahoma

Christiana, Tennessee

Boerne, Texas

Troup, Texas

show all

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Gardener's Notes:

2
positives
3
neutrals
0
negative
Sort By:
Sort By:
J
Lawnside, NJ | April 2010 | neutral

I highly doubt blackjack oak is hardy to zone 3, its pretty much a zone 6 oak.

Q
Q
Shepherd, TX (Zone 8b) | November 2006 | neutral

Often found here in East Texas growing with Southern Red Oaks and Post Oaks. The leaves do resemble Water Oaks to a degree, but are larg...Read More

E
Atmore, AL (Zone 8b) | July 2005 | positive

This tree is usually a small understory tree where I live. The leaves resemble water oak but are wider. The two are often confused. Black...Read More

T
Now in Orlando, FL (Zone 9b) | December 2004 | neutral

Those are some great photos, Melody and Jeff.

The blackjack oak is another broad leafed deciduous oak that is native to Fl...Read More

M
M
Benton, KY (Zone 7a) | June 2004 | positive

One of the wonderful Red Oaks, the Blackjack is denoted by the large fan like leaves. The pointed tufts show that it is in the Red Oak fa...Read More

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