Species guide

Yukon trees by species

Profiles of trees common to the Yukon, including typical habitat, common pests and diseases, homeowner concerns, and practical maintenance tips.

White spruce

Picea glauca

A widespread Yukon conifer found on well-drained sites, mixedwood stands, and around many residential properties.

Common concerns

  • Spruce beetle pressure
  • Drought stress on exposed sites
  • Ladder fuels near structures

Homeowner tip: Keep lower branches and nearby deadfall managed where spruce sits close to buildings or access routes.

Black spruce

Picea mariana

Common on colder, wetter, organic soils and often associated with muskeg and permafrost-influenced ground.

Common concerns

  • Shallow rooting
  • High flammability in dense stands
  • Frost heave and saturated soil movement

Homeowner tip: Treat dense black spruce near homes as a FireSmart priority because branches often extend close to the ground.

Lodgepole pine

Pinus contorta

Present on drier, well-drained sites and open slopes, often in even-aged stands after disturbance.

Common concerns

  • Pine beetle monitoring
  • Dead standing stems
  • Wind exposure after thinning

Homeowner tip: Plan removals and thinning in stages so remaining trees are not suddenly overexposed to wind.

Trembling aspen

Populus tremuloides

A common deciduous tree in mixedwood stands, disturbed areas, and sunny residential edges.

Common concerns

  • Decay pockets
  • Suckering after disturbance
  • Stem cankers

Homeowner tip: Aspen can reduce surface fire intensity compared with conifers, but defective stems still need hazard review.

Balsam poplar

Populus balsamifera

Often found in riparian zones, low areas, and moister soils where roots can access water.

Common concerns

  • Large limb failure
  • Heart rot
  • Root disturbance near banks or ditches

Homeowner tip: Have large poplars inspected when they lean toward structures, driveways, or play areas.

Alaska paper birch

Betula neoalaskana

A hardy northern birch found in mixedwoods, yards, and slopes with adequate drainage.

Common concerns

  • Bronze birch borer where stressed
  • Sunscald or bark injury
  • Decay after topping or poor pruning

Homeowner tip: Avoid topping birch; use structural pruning and water young trees during hot dry spells.