Arkansas Oak (Quercus arkansana)

Arkansas Oak

Quercus arkansana

Rugged, drought-tolerant oak with textured foliage. Deciduous tree common in southern U.S. woodlands; common name: Arkansas oak.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; thrives in open, exposed sites and tolerates filtered shade in hot climates
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Watering Drought-tolerant once established; water deeply during prolonged dry spells to support root development
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Temperature Hardy to cold winter temperatures; withstands summer heat in southern U.S. regions with adequate soil moisture
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Characteristics

  • Leaf: Oblong to elliptical, 7–15 cm long, deep green with shallow rounded lobes and pubescent pale undersides
  • Flower: Male catkins are yellow-green, pendulous clusters; female flowers are small, reddish axillary spikes
  • Bark: Light gray, developing furrowed, scaly ridges as the tree matures
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Care Guide

Watering

Water deeply every 7–10 days during extended dry periods; reduce frequency once the tree is fully established

Fertilization

Apply a balanced slow-release fertilizer once in early spring before new growth emerges. Use a fertilizer formulated for woody trees to support healthy foliage and root development

Composted oak leaf mold:Collect fallen oak leaves, compost for 6–12 months until fully decomposed; mix 2–3 inches of the mold into the topsoil around the tree base to improve soil structure and nutrient availability
Pruning
  • Remove dead, damaged, or crossing branches in late winter while the tree is dormant
  • Thin crowded inner branches to improve air circulation and light penetration to lower foliage
  • Avoid heavy pruning; maintain the tree's natural rounded canopy shape to support structural integrity
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; tannins may cause vomiting, diarrhea, and abdominal discomfort if acorns or leaves are ingested

Humans: Ingestion of large quantities of acorns or leaves may cause mild gastrointestinal upset due to tannin content

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Garden Uses & Culture

Culture: Symbolizes strength, resilience, and southern U.S. woodland heritage

Usage: Ornamental shade tree; acorns provide food for deer, squirrels, and other wildlife