// SPECIES PROFILE · TREE · NATIVE

Blackjack oak

Quercus marilandica var. ashei

Blackjack oak (Quercus marilandica var. ashei) is a tree in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 5b–10a. Mature size 30'–60'. Blooms Mar–May.

// QUICK FACTS

Family: —
Group: tree
Native range: Native to 27 U.S. states, including AL, AR, DC, DE, FL, GA…
USDA hardiness: Zones 5b–10a
Mature size: 30'–60'
Sun: Part shade
Water: Low · xeric
Bloom: Mar–May
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Blackjack oak (Quercus marilandica var. ashei) — *Quercus marilandica var. ashei* — Blackjack oak. Photo via iNaturalist — (c) Scott Ward, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Blackjack oak (Quercus marilandica var. ashei) is a tree in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 5b–10a. Mature size 30'–60'. Blooms Mar–May. Low water use makes it a strong candidate for xeric and drought-conscious plantings.

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, blackjack oak pairs naturally with: American Persimmon (Diospyros virginiana), American Sycamore (Platanus occidentalis), Black Cherry (Prunus serotina), Black Locust (Robinia pseudoacacia).