The Blue Douglas Fir or Rocky Mountain Douglas Fir is a fast growing evergreen tree that features long blue-green foliage and multi-colored cones. It can grow upwards of 70 ft in height and maintains a pyramidal shape.

New foliage emerges bright green-blue. As they age, the needles of this evergreen fade into a subtle, yet stunning silvery blue. Pinecones serve as food for wildlife, while birds find refuge in this trees layered, dense branches. The uniform, pyramidal habit offers a clean, attractive appearance that is great in large open landscapes.

The Blue Douglas Fir is a sturdy and tough tree that tolerates extreme cold, high winds and heavy snow. Plant in full and any well-drained acidic soil. This fir tree is deer and drought tolerant, and only rarely encounters issues with pests and disease. There is no need to prune this low maintenance tree.

Where Should I Plant This Fir?

Adaptable to a variety of soils including acidic and loves full sun exposure in grow zones 4-7.

How To Fertilize This Fir Tree

Fertilize when planting and in early spring yearly with a slow release fertilizer. If your soil is on the basic side choose a fertilizer for acid loving plants.

How Do I Prune A Blue Douglas Fir?

There is no need to prune this low maintenance tree but it can be pruned to control height. Remove dead or damaged branches and do all trimming in late winter while the tree is in dormancy.

Spring and fall are great times for planting your Blue Douglas Fir. Winter and summer are fine as long as you avoid extreme temps. 
The Rocky Mountain Douglas Fir thrives in full sun and adapts to any soil that is well drained. A neutral to acidic soil is best. If you know you have an alkaline soil choose an acidic fertilizer like Espoma's Hollytone. After planting, adding a layer of 2 to 3 inches of mulch will help keep the soil moist. Do not allow the mulch to touch the trunk as this increases the chances of pests and disease. Water your new tree deeply a couple times a week for the first month or two. After your plants are established, they only need watered when the soil is dry. This Fir is drought sensitive after establishing. Fertilize when planting and in early spring yearly with a slow release fertilizer. If your soil is on the basic side choose a fertilizer for acid loving plants. The Blue Douglas-Fir is wind, cold, and deer resistant.

Plant as a specimen or focal tree for a stellar look. The Blue Douglas adds cool color and great texture. This long-living tree is perfect for a windbreak or privacy screen. Plant about 15 feet apart for a tight screen.