Abies magnifica

RHS Plant Profile
red fir

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Other common names

Californian red fir

Conifers Trees
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Very tall, evergreen, conifer tree, reaching height up to 25-35m in optimal conditions. Crown on young trees is narrowly conical, becoming more open, barrel-shaped on older trees. The common name of this Fir refers to the reddish-brown bark of mature specimens. Needle-like leaves are up to 3.5cm long, blue-green in colour, glossy above, with two pale, grey lines underneath. Needles are spirally arranged along the shoots, slightly twisted, bending upwards. Barrel-shaped, golden-green seed cones are 18 - 25 cm long, with concealed bracts.

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

Higher than 12 metres

Max Spread

4-8 metres

Size

Time to Maturity
20–50 years
Max Spread
4-8 metres
Max Height
Higher than 12 metres

Growing Conditions

Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Neutral

Position

Full sun
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Pinaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Columnar upright
Genus
Abies are evergreen conifers, often very tall, with whorled branches bearing flattened, linear leaves, often whitish beneath, and on the upper branches, large cones which break up whilst attached to the tree
Name Status
Correct
Plant Range
USA (California, Oregon, Nevada)

How to Grow

Cultivation

Grows best in deep, slightly acidic, moist but well-drained soils in cooler climates. See conifer cultivation

Propagation

Propagate by seed

Suggested planting locations and garden types

  • Architectural
  • City and courtyard gardens

Pruning

No pruning required

Pests

May be susceptible to adelgids and aphids

Diseases

Generally disease-free, but may be susceptible to honey fungus