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Pinus attenuata

Knobcone pine

Garden

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Features

  • Height10m to 25m
  • Spread5m to 8m
  • Growth HabitBroad conical
  • Leaf ColourYellow-green

Description

Pinus attenuata (Knobcone pine). This is a rapid-growing hardy pine. The 3 sheath needles are 4-5 inches long and yellowish green. The cones are 6in long.

Characteristics

Needled evergreen, Conifer or Tree

Other common names

Pine

Origin

Oregon, California South to Baja, USA

Interest and use

Many species have ornamental fruit. Suitable for coastal conditions.

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Needs

  • LightPart shade
  • HardinessFully hardy (min -15°C)
  • SoilClay, Chalky
  • Soil pH5.0 to 7.0
  • WaterMoist

Cultivation

They will grow in a wide range of conditions, they are wind resistant and will thrive on soils of moderate to low fertility which are well drained , you can propagate from seeds or grafting.

Propagation

Seed sown in autumn or spring (but forms selected for leaf colour do not come true). Evergreen current growth cuttings in autumn to spring. Deciduous softwood cuttings in summer.

Pests, diseases or disorders

Honey fungus may be a problem; young plants are more susceptible. Conifer spinning mite may cause defoliation.

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