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Texas Red Oak, Spanish Oak, Spotted Oak, Red Oak, Rock Oak

Quercus buckleyi

Family: Fagaceae (fag-AY-see-ee) (Info)
Genus: Quercus (KWER-kus) (Info)
Species: buckleyi (BUK-lee-eye) (Info)



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Unknown - Tell us


30-40 ft. (9-12 m)

over 40 ft. (12 m)


30-40 ft. (9-12 m)

over 40 ft. (12 m)


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)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun


Pollen may cause allergic reaction

Bloom Color:


Bloom Time:

Mid Spring

Late Spring/Early Summer


Grown for foliage


Good Fall Color

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; direct sow outdoors in fall

Seed Collecting:

Seed does not store well; sow as soon as possible


This plant has been said to grow in the following regions:

Chandler, Arizona

Kansas City, Missouri

Albuquerque, New Mexico

Bernalillo, New Mexico

Austin, Texas

Dickinson, Texas

Fredericksburg, Texas

Mc Kinney, Texas

San Antonio, Texas (2 reports)

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Gardeners' Notes:


On Dec 12, 2003, htop from San Antonio, TX (Zone 8b) wrote:

This medium sized oak is related to the Shumard oak, Q. shumardii, and is in the black oak group. The Texas red oak is naturally found in an area located in central Texas. It was originally named Q. texana, which remains a synonym.
It usually reaches a height of 30 feet or more and a width of 30 feet or more. The Texas red oak forms a dense rounded canopy and may also be found as a multi-trunked specimen in the wild. Growing moderately fast, it has thick dark gray to black bark with scaly ridges separated by deep, dark fissures. But sometimes it is light gray and smooth.

Flowers appear during leaf emergence with 5 to 7 inch in length male flowers in the form of catkins (droopy and caterpillar shaped flowers). The female flowers are single or in pairs. It produces ac... read more