Bur Oak

About Bur Oak in Alberta

Bur Oak is a rare native-at-range-edge oak in Alberta, most credibly associated with small southeastern creek-valley populations, while also being a much more widely planted tree in towns, parks, yards, and shelterbelt contexts across the province. For Ancient Roots Alberta, the most important distinction is origin: a naturally occurring Bur Oak in suitable southeastern habitat carries very different heritage weight from a cultivated urban specimen, even though both can be significant for age, rarity, and landscape history.

Identification: Leaves are deciduous, alternate, large, and unmistakably oak-like, usually 10-30 cm long. The classic Bur Oak leaf is broadest in the upper half, deeply cut near the middle, and pinched into a clear hourglass or waist shape, with a broad rounded terminal section above. The upper surface is green and somewhat shiny, while the underside is paler and carries fine star-shaped hairs.

Alberta range and habitat: Bur Oak is native in Alberta, but only at the extreme western edge of its natural range. Credible wild occurrence is concentrated in southeastern Alberta, especially in creek-valley and river-valley settings where remnant native populations may persist.