Abies concolor
Colorado fir, White fir, Colorado white fir, Rocky Mountain white fir
- Height × spread
- 25m × 8m
- Position
- Full sun
- Hardiness
- Colder than -20C (RHS H7)
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
Found in the Southwestern states of North America, Colorado, Arizona, and New Mexico, this is a large fir with light, rather bluish green foliage held in horizontal tiers. The bark is smooth, grey black and develops scales with age. There are pale green fir cones. The tree is slow growing and is only likely to increase its height by around 30cm (12in) a year. It is very tolerant of heat and dryness although it does best in a cool position with some moisture, especially in limy soil. This grows to some 60m (200ft) in its native territory but is likely to reach just 25m (82ft) with an 8m (26ft) spread in Britain and Ireland.
- Foliage colour
- Grey
- Fruit colour
- Green
- Variegated
- No
- Scent
- Yes
- Shape
- Cone
- Height
- 25m
- Spread
- 8m
- Height in 10 years
- 6m
- Spread in 10 years
- 3m
- Evergreen
- Evergreen
- Garden style
- Scented garden
- Sun or shade
- Likes full sun, tolerates part shade
- Soil type
- Clay, Loam (normal), Sandy soil
- Soil pH
- All types
- Drainage
- Moisture retentive soil, Well drained soil, Drought resistant
- Hardiness
- Colder than -20C (RHS H7)
- Borders & containers
- Borders
- Use for
- Architectural
- Maintenance
- Easycare – low/no maintenance
- Hazards
- No
Spring
Spring - late · Outdoors
Feed young plants with slow release fertiliser
Spread a slow release fertiliser around the base of the plant to the edge of the foliage spread, so that it can feed the roots. It is helpful for this to be applied for several years.
This is a simple way to provide a nutrient boost until the plant becomes well established.
Spring-Autumn · Outdoors
Water to keep the soil moist
For best results, this plant needs soil that is always moist. Water deeply and regularly as soon as soil appears dry. Even for established plants in the ground, a dry week can cause problems with some soils. Check plants in pots more often, especially in hot weather. Or install an automatic irrigation system which will do the hard work for you, even when you are away on holiday.
Without regular watering some plants never fully regain their beauty.
Planting & general
Outdoor planting · Planting
Add root growth stimulant to the planting hole
Mycorrhizal fungi helps roots establish quickly, so they absorb water and nutrients more efficiently. It comes as a powder, granule or gel. Add to the planting hole or container, and to the plant's rootball before planting in the hole. For "bareroot" plants use a gel.
Planting
Protect & support young trees
Attach a newly planted tree or tall shrub over 1m to a tree stake to give support and prevent windrock. Use a tree guard to stop tree bark being eaten by animals, especially in areas with deer - removing bark injures a tree and in worst case can kill it.
Found in
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