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.