Fall Tree & Shrub Planting Winnipeg: Timing Guide
Roots need about 6 weeks in unfrozen soil before the ground freezes solid, which puts the deadline for most deciduous material around early October and evergreens earlier still, since they lose moisture through their needles all winter. Watering is the step most people stop too early: newly planted material needs consistent water right up until the ground actually freezes, not just the first week or two.
