Illustration
Concolor Fir
Abies concolor
Also called white fir, colorado fir and western white fir
Concolor Fir is grown for its foliage rather than flowers, giving the garden structure and color all season long.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Concolor Fir
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 3–7. Expect it to reach about 50 ft tall and 23 ft wide at maturity, in roughly 10 years (a house reading).
Pets
- Not yet checked for pets.
Lists differ and none is complete. If a pet eats a plant and seems unwell, call a veterinarian or a pet poison helpline.
No toxicity note is on file for Concolor Fir. That is not a clearance: check its safety for people and pets before planting.
What was checked
Nine facts were checked against named botanical sources, each recorded beside the sources that carried it: mature height and spread, hardiness zones, sun, water, bloom months and color, the trait tags, and years to mature size, which rests on a recorded house rule where no publisher states one and is marked so. Soil, diseases, pests, toxicity and the plant's own names have not yet been read for this plant, and its trait tags are the ones a feature uses rather than every word a page prints. Each fact above carries its own mark. The planting, spacing and size sections are derived from these checked facts by a fixed rule, not checked separately, and the plant type is the library's own classification.
When to plant Concolor Fir
Plant Concolor Fir in spring once the soil is workable, or by very early fall at the latest: an evergreen needs its roots down well before the ground freezes. In zone 5, the middle of its hardy zones 3 to 7, that is April to June, or August on the fall side.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 5, the middle of this plant's hardy range, start with zone 5 in April. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Concolor Fir get?
50 fttall5 ft 7 inan adult23 ftwideSee Concolor Fir in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
How far apart to plant Concolor Fir
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Give Concolor Fir about 23 ft of clear ground in every direction, measured from its center. It is one plant with room around it, not a row, and a raised bed is too small for it.
Add Concolor Fir to a garden plan and the planner draws it at its full width, so you see the spacing before you buy.
Where these facts come from
Concolor Fir's height, spread, hardiness zones, sun, water and trait tags were checked against 8 published sources on November 5, 2026. Each one is linked below with every fact it carried, which can include a fact this page still marks as not yet checked, because a source carrying a value is not the same as the value being held to the standard. Facts not in that list, and the planting, spacing and size sections, are not covered by these sources. Bloom was checked as well: Concolor Fir bears no flowers, so there is no bloom window for a source to carry.
- Missouri Botanical Gardenheight, spread, hardiness zones, sun, water and trait tags
- NC State Extensionheight, spread, hardiness zones, sun, water and trait tags
- University of Wisconsin HorticultureUniversity of Wisconsin-Madison Extensionheight, spread, hardiness zones, sun, water and trait tags
- naturalresources.extension.iastate.eduIowa State University Extensionheight, spread, hardiness zones, sun and water
- Chicago Botanic Gardenheight, hardiness zones, sun and water
- RHSRoyal Horticultural Societyheight, spread, sun and water
- selectors.extension.illinois.eduUniversity of Illinois Extensionheight, sun and water
- wilsonnurseries.comWilson Nurseriesheight and spread
How the checking works, and what each standard covers, is on the verified plants page.
Where it grows wild
Native to 9 states
United States: Arizona, California, Colorado, Idaho, Nevada, New Mexico, Oregon, Utah, Wyoming
Recorded growing wild in 77 counties.
Also grows wild, but is not native, in Vermont.
Range data from the World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 4.0, adapted) and USDA PLANTS. How the native range is credited.
Explore similar plants
You might also like
Foliage
Foliage
Foliage
Foliage
Foliage
FoliageDesign a garden with this
Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.