Bur Oak

Description

Requirements and Tolerances

Cold Tolerance: USDA Zone 3-8
Sunlight Requirements: Full sun
Water Requirements: Moderate, consistent moisture
Soil Type: Well-drained
Soil pH: 5.5-7.5
Plant Spacing: 70-80′ apart
Drought Tolerance: High
Chilling Hours: None
Heat Tolerance: Moderate

Physical Characteristics

Rootstock: From Seed
Plant Size: 70-80′ tall, 70-80′ wide
Growth Habit: Upright, rounded
Foliage Color: Dark green
Bloom Time: April-May
Flower Color: Yellow-green
Fall Color: Yellow-brown
Nut Size: 1.5-2″
Nut Flavor: Mild, sweet
Nut/Husk Color and Appearance Light brown, enclosed in a fringed cup

Growth and Reproduction

Growth Rate: Slow
Years to Bear: 30-35
Lifespan: 200-300 years
Pollination Requirements: Monoecious
Pollination Mechanisms: Wind
Harvest Time: September-October
Yield & Storage: Moderate, store in a cool, dry place

Disease Resistance

Toxicity: Non-toxic
Invasive Potential: Low
Native Range: Eastern and Central United States
Nitrogen Fixing: No
Oak Wilt (Bretziella fagacearum): Resistant
Anthracnose (Apiognomonia quercina): Moderately Resistant
Armillaria Root Rot (Armillaria mellea): Moderately Resistant
Powdery Mildew (Erysiphe alphitoides): Moderately Resistant
Gypsy Moth (Lymantria dispar): Moderately Resistant
Oak Leafroller (Archips semiferanus): Moderately Resistant