How should I care for my transplanted fir trees in winter?

Certain tree species are considered a "fall (autumn) planting risk" meaning that trees of this species have a higher risk of failure and poor growth when planted in the fall. Fir is one of the species listed as a fall planting risk and it is recommended that planting only be done in the spring. There is much speculation as to why some species don't transplant successfully in the fall months but, the fact is that we do not fully understand the reasons for this.

Ensuring the plants have adequate soil moisture before the soil freezes is important. Mulches applied to the soil will also help conserve moisture and promote root development and establishment. Fertilization now will not influence establishment but should be considered in spring. Finally, any protection that can be given from wind would be helpful in preventing desiccation.