Alberta trees, natural region by natural region

Boreal Forest and Canadian Shield

The Boreal Forest covers 58% of Alberta, and the booklet names aspen and balsam poplar as its most common deciduous trees and white spruce, black spruce and jack pine as its main conifers.

• Trembling aspen (Populus tremuloides): nearly round leaves 3 to 7 cm on a flattened stalk usually longer than the blade, and smooth, pale green to nearly white bark. It grows throughout Canada's forested areas. The poplar guide compares it with its relatives.
• Balsam poplar (Populus balsamifera): leaves 7 to 12 cm with a long, drawn-out tip, silvery green beneath and often stained with brownish resin, and very resinous, fragrant buds up to 25 mm. A tree of river valleys and moist, low ground.
• White spruce (Picea glauca): stiff needles 15 to 22 mm on hairless twigs, and slender cones 3 to 6 cm with smooth, rounded scale edges.
• Black spruce (Picea mariana): shorter needles, 8 to 15 mm, on hairy twigs, and small, nearly round cones; the booklet places it in treed fens and bogs with larch.
• Jack pine (Pinus banksiana): two stiff needles 2 to 4 cm, spread apart, and curved cones that usually stay closed for 10 to 20 years until fire opens them. NRCan calls it the most widely distributed pine in Canada.
• Tamarack (Larix laricina): soft needles in tufts of 15 to 60 that turn yellow and drop each autumn, on cold, wet sites such as sphagnum bogs and muskeg. See the tamarack profile.
• White birch (Betula papyrifera): creamy white bark peeling in sheets.

In the Canadian Shield corner of northeastern Alberta, granite and hundreds of small lakes leave room only for open jack pine, aspen and birch stands where the soil is deep enough.

Foothills and Rocky Mountains

The Foothills carry mixed forests of aspen, lodgepole pine, white spruce and balsam poplar at lower elevations, and lodgepole pine forests higher up.

• Lodgepole pine (Pinus contorta), Alberta's tree: two stiff, usually twisted needles 3 to 7 cm per bundle, and cones 3 to 6 cm with a curved prickle on each scale, often held closed by resin for 10 to 20 years. Canadian Heritage's Alberta page gives 1984 as the year it was adopted. Our pine guide covers bundle counts.

The Rocky Mountain region has three subregions. In the Montane, the lowest and warmest, lodgepole pine, aspen and white spruce mix, and the booklet adds Douglas-fir from the Athabasca valley south and open limber pine stands on ridgetops.

• Douglas-fir (Pseudotsuga menziesii): flat needles that smell strongly when crushed, and hanging cones under 8 cm whose three-pronged bracts stick out beyond the scales (NRCan's Rocky Mountain Douglas-fir factsheet).
• Limber pine (Pinus flexilis): needles in bundles of five, 3 to 7 cm, and cones 7 to 15 cm that open and drop their seed, according to the COSEWIC report (2014). NRCan says its young branches are so tough and flexible they gave the tree its name.

In the Subalpine, open stands of Engelmann spruce and subalpine fir dominate the higher slopes, with dense lodgepole pine lower down:

• Engelmann spruce (Picea engelmannii): bluish-green needles 15 to 25 mm, aromatic when crushed, and cones 3 to 7 cm with thin, flexible, loose scales that are often split at the tip. It often forms part of the alpine tree line.
• Subalpine fir (Abies lasiocarpa): needles 25 to 40 mm curving upward, upright barrel-shaped cones 4 to 10 cm that break up on the branch, and a narrow, spire-topped crown.
• Whitebark pine (Pinus albicaulis): five stout needles 4 to 9 cm clustered toward the twig ends, and cones 5 to 8 cm that barely open; at the tree line it may grow as a sprawling shrub. COSEWIC separates it from limber pine by its shorter, purple cones.

The Alpine subregion above the tree line has no forest; the booklet notes stunted subalpine fir and Engelmann spruce at its edge, and subalpine larch along the tree line in the south. The Government of Alberta names whitebark and limber pine as the province's two endangered tree species, threatened by white pine blister rust, mountain pine beetle, fire suppression and climate change.

Parkland and Grassland

The Parkland is Alberta's most densely populated natural region, a mosaic of aspen groves and grassland between the prairie and the boreal forest. In the south, islands of aspen grow in moist hollows and on north-facing slopes; to the north, closed aspen and balsam poplar stands are common. Learn aspen and balsam poplar first, then the planted trees around farms and towns.

• Manitoba maple (Acer negundo), also called box-elder: the maple with compound leaves of 3 to 9 leaflets, opposite on the twig, and keys in drooping clusters. NRCan lists lakeshores, stream banks and seasonally flooded sites as its habitat. The boxelder page has the details.

The Grassland, 14.4% of Alberta, is the warmest and driest region and is mostly treeless. Trees follow the rivers: the booklet describes plains cottonwood forests, narrow-leaf cottonwood stands, and balsam poplar and aspen along rivers and streams.

The trees you meet in Alberta towns

City trees differ from forest trees. The City of Edmonton publishes its tree inventory as open data: the Trees dataset, updated 19 October 2026 and read on 21 October, lists 482,603 city-maintained trees in parks, boulevards and buffers. Counted by species:

Native forest trees appear lower down: trembling aspen (12,268) and lodgepole pine (11,628), next to Scots pine (11,965), a planted European pine. Manitoba maple counts 5,638 trees. For the national ranking of forest trees, see the most common trees in Canada; the Canada hub lists every provincial tree.

Using a photo app on Alberta trees

Tree Identifier names a tree from one photo of a needle bundle, a cone, a leaf or the bark, with a follow-up chat for questions such as "lodgepole or jack pine?". It shows no confidence score and no list of look-alikes, so check the answer against the clues above, especially for the two five-needle pines and the two-needle pines, which differ mostly in their cones. In the mountains you will need a data connection for an answer, since the app sends the photo to a cloud AI model. Its Tree Map keeps each located find, useful for returning to a stand of tamarack or alpine larch when it turns gold.