Bur Oak (Quercus macrocarpa)
Bur Oak (Quercus macrocarpa)
Why We Grow It
Why We Grow It
Bur Oak is an invaluable tree for food forests, restoration, agroforestry and improving living systems, offering unmatched adaptability, productivity, and ecological benefits. Its acorns provide a reliable food source for both humans and wildlife, while its deep roots improve soil structure and stabilize the landscape. The tree’s ability to thrive in diverse environments makes it a cornerstone species for creating resilient and biodiverse systems. Its towering stature and mighty presence ensure it will stand as a legacy tree for generations to come.
How the Plant Grows
How the Plant Grows
Bur Oak grows slowly but steadily, developing a robust trunk and a massive, spreading crown with deeply furrowed bark. Its large, lobed leaves create dense shade during the growing season, while its acorns mature in autumn, often in impressive masting events. The tree is highly drought-tolerant once established and can withstand challenging conditions, including compacted urban soils and periodic flooding.
Plant Size
Plant Size
Size at Maturity- Canopy layer. Reaches heights of 70-100 feet with a spread of 50-80 feet
Current Size- Large 12"-30" 1 year old seedling
Small up to 12" 1 year old seedling
Additional Info
Additional Info
The Bur Oak is known for its resilience and versatility, thriving in environments as diverse as prairies, floodplains, and urban landscapes. Its acorns are notable for their large size and low tannin content, making them among the most edible of all oak species, requiring minimal leaching for human consumption. These acorns are a critical food source for wildlife, including deer, birds, and squirrels. Additionally, Bur Oak timber is highly prized for its strength and durability, often used in furniture and flooring. This tree’s ecological importance extends to providing shade, habitat, and soil stabilization, making it a keystone species in its native range.
The Bur Oak is a magnificent and adaptable tree, renowned for its hardiness, ecological importance, and ability to produce some of the largest and most edible acorns in North America. Found from the prairies of Alberta to the coasts of New Brunswick, this tree thrives across Canada’s diverse climates and soils. Highly valued for its timber and its role in supporting wildlife, the Bur Oak is a powerful ally for permaculture systems and food forestry. Its ability to produce large masting crops makes it an essential addition for food security on homesteads and in communities.
Share
Plant Highlights
-
Water
Tolerates a variety of moisture conditions, from dry to periodically wet soils.
-
Pollination
Wind-pollinated; monoecious with male and female flowers on the same tree. Plant a few for improved nut set
-
Soil
Highly adaptable; grows in a range of soils from sandy to clay and tolerates both acidic and alkaline conditions. The quiver killer (snowboard reference haha).
-
Years to Bear
6-10 if you get a precocious tree but can be highly variable among seedlings
-
Hardiness
Zones 2-8, tolerating temperatures below -40°C (-40°F)
-
Solar
Prefers full sun but can tolerate partial shade
Subscribe to our emails
Lots of Free Growing Info. Be the first to know about new plants and exclusive discounts.