Tree Library

Bur Oak

Quercus macrocarpa

Bur oak is a large, durable shade tree valued for its massive canopy, strong structure, and exceptional tolerance to heat, cold, and drought. Well-suited to Colorado landscapes, it is a long-lived tree that provides deep shade and long-term stability when given adequate space to grow.

Quick specifications

Mature Height
60–80 ft
Mature Spread
60–80 ft
Growth Rate
Slow to moderate
Sun
Full sun required for proper development
Water
Deep, infrequent watering encourages deep rooting
Hardiness
200+ years under good conditions
Genus
Oak (Quercus)

Identification

  • bur oak tree

    Species

  • bur oak tree leaves

    Leaf detail

  • bur oak tree branch

    Structure

Overview

Bur oak is a large, durable shade tree valued for its massive canopy, strong structure, and exceptional tolerance to heat, cold, and drought. Well-suited to Colorado landscapes, it is a long-lived tree that provides deep shade and long-term stability when given adequate space to grow.

Key Characteristics

  • Mature Size: 60–80 ft tall | 60–80 ft wide
  • Growth Rate: Slow to moderate
  • Form: Broad, spreading canopy with strong structure
  • Fall Color: Yellow to yellow-brown
  • Lifespan: 200+ years under good conditions

Colorado Growing Conditions

Extremely tolerant of drought, wind, and cold

Handles alkaline and clay soils better than most oaks

Very strong wood and branch structure

Long-lived, resilient shade tree once established

Planting Considerations

  • Full sun required for proper development
  • Needs significant space for mature canopy
  • Slow establishment; requires patience early on
  • Deep, infrequent watering encourages deep rooting

Common Problems

  • Leaf scorch during extreme drought when young
  • Minor chlorosis possible in very high-pH soils
  • Generally low pest and disease pressure

Best Use Scenarios

  • Large residential properties and acreage
  • Parks, open spaces, and estates
  • Windy, exposed Front Range sites
  • Long-term legacy shade tree plantings
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