Natives by ZIP

Native plants recorded in your state and county

Tree · Fagaceae

Blackjack oak

Quercus marilandica · includes its varieties and subspecies

Blackjack oak is recorded as native to 26 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 1,007 counties of those states by USDA PLANTS.

Recorded native ranges can include long-established populations that spread from gardens; check your state’s native plant society list for local guidance. How native status is decided.

Key facts · USDA PLANTS

Blackjack oak at a glance

Native in
1,007 counties, across 26 states and territories
Estimated cold hardiness
Zone 6a PLANTS minimum temperature −13°F
Mature height
25 ft PLANTS mature height
Light and water
Full sun (shade-intolerant) Low water use

Estimated cold hardiness: zone 6a. PLANTS gives a minimum temperature of −13°F; zone 6a winters bottom out at −10°F, the coldest half-zone that stays within that limit.

Blackjack oak is recorded as native to 26 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 1,007 counties of those states by USDA PLANTS.

Counties where it is native

The 15 counties with the most ZIP codes among the 1,007 where it is listed.

Native counties by state

Growing traits

Values from the PLANTS characteristics record. “Not recorded” means PLANTS has no value; nothing here is estimated except the zone.

Growth

Growth habit
Shrub, Tree
Duration
Perennial
Mature height
25 ft
Growth rate
Slow
Growth form
Single Stem
Shape
Erect
Lifespan
Long
Active growth period
Spring and Summer

Light and water

Shade tolerance
Intolerant (full sun (shade-intolerant))
Moisture use
Low water use
Drought tolerance
High
Tolerance of waterlogged soil
None
Precipitation range
17 to 48 in per year

Soil

Soil textures
Coarse and medium
pH range
4.6 to 5.6
Lime (CaCO₃) tolerance
Low
Salinity tolerance
Medium
Fertility requirement
Low
Minimum root depth
24 in

Climate

Minimum temperature
−13°F
Estimated cold hardiness
Zone 6a and warmer
Minimum frost-free days
185
Fire tolerance
Low

Flowers, leaves and fruit

Flower color
Yellow
Showy flowers
No
Bloom period
Mid Spring
Foliage color
Dark Green
Showy in fall
Yes
Keeps leaves
No
Fruit color
Brown

Other

Toxicity
None
Nitrogen fixation
None
Nursery availability
Routinely Available
Family
Fagaceae
PLANTS symbol
QUMA3

Is it native where you live?

Matches your ZIP to the county it mostly lies in, then lists the plants recorded as native to your state (Kew’s World Checklist and USDA PLANTS) and recorded in that county by USDA PLANTS.

Source & data date

Source
USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).
Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.
USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
Citation
USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.
Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
Data date
Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
Scope
Quercus marilandica (PLANTS symbol QUMA3), including 1 variety or subspecies folded into the species.
Method
A species is listed when it is recorded as native to the state in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in the county by USDA PLANTS. Species PLANTS labels both native and introduced are listed separately. Full method · All sources

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