Colorado Fir, Concolor Fir, White Fir 'Blue Cloak'

Abies concolor

Family: Pinaceae (py-NAY-see-ee) (Info)
Genus: Abies (A-bees) (Info)
Species: concolor (KON-kol-or) (Info)
Cultivar: Blue Cloak





Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


18-24 in. (45-60 cm)


15-18 in. (38-45 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Unknown - Tell us

Bloom Time:

Unknown - Tell us



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Bag seedheads to capture ripening seed

Collect seedhead/pod when flowers fade; allow to dry

Allow pods to dry on plant; break open to collect seeds

Allow seedheads to dry on plants; remove and collect seeds

Remove fleshy coating on seeds before storing

Allow unblemished fruit to ripen; clean and dry seeds

Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

Ferment seeds before storing

Wear gloves to protect hands when handling seeds

Properly cleaned, seed can be successfully stored

Seed does not store well; sow as soon as possible

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


This plant has been said to grow in the following regions:

Horton, Michigan

Hillsboro, Oregon

Gardeners' Notes:


On Aug 2, 2017, Gewissjohn from Hillsboro, OR (Zone 8a) wrote:

Located in full sun and well drained soil. Needed to be coaxed out of its heavy clay growth soil with lots of starter fertilizer during first two growing seasons but seems to have established without any ill effects. Was planted in between a Picea omorika 'Pendula Bruns' and Pinus densiflora 'Burke's Red'. Nice contrast! Smaller specimen (3-4ft.) with beautiful swept branching and baby blue foliage that just glows in late day shade.


On Oct 21, 2011, Bluespruce_Paul from Portland,
United Kingdom wrote:

A stunningly beautiful fir, intensely, startling silvery blue. I have a young plant only 30 cm in height, acquired from Foxhollow Gardens near Poole in Dorset. It was planted just six months ago, and is full of promise. I have planted it in limey clay, but this has had a considerable amount of well-rotted manure, sand, and coffee grounds dug into it. It contrasts beautifully with nearby Thuja occidentalis 'Rheingold' planted in front of it, and a deep purple Physocarpus planted behind. Its position is in strong, full sun, exposed to salt-laden winds, which it does not mind a bit. I am very much looking forward to seeing this plant develop in the years to come. :)