Pinus aristata

Bristlecone Pine, Hickory Pine

Pinaceae

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Habitat

  • native to mountainous regions of the southwestern United States
  • cold hardy to zone 4

Habit and Form

  • evergreen small tree, up to 20 ft.
  • dwarf and irregular growth habit
  • very attractive picturesque form
  • medium texture
  • very slow growth rate, making mature height irrelevant

Summer Foliage

  • 5 needles per fasicle
  • approx. 1" in length
  • dark green needles
  • needle undersides are whitish
  • needles are tightly packed on the branches
  • white resin dots on the needles are numerous; mistaken for scale

Autumn Foliage

  • no fall color (remains green)
  • needles can persist over 15 years

Flowers

  • monoecious
  • no ornamental value

Fruit

  • dark puplish brown cone
  • oviod, 3.5" long
  • each cone scale has a thorn-like appearance at tip, hence the common name Bristlecone

Culture

  • in native habitat, found on dry, rocky, soils
  • full sun
  • pH adaptable
  • not tolerant of polluted air
  • tolerant of wind
  • very long-lived

Landscape Uses

  • potted plant
  • good accent plant in rock garden
  • patio plant
  • remains in scale to landscape for a great many years

Liabilities

  • very slow growth in landscape
  • cones can hurt if stepped on
  • rare and hard to find

ID Features

  • needles in 5's, tufted apperance
  • dwarf habit
  • white flecks on needles
  • thorn-like tips on pine scales
  • retention of several years of needles

Propagation

  • by seed, no treatment is needed for good germination

Cultivars/Varieties

'Sherwood Compact' - Regarded as a handsome slow-growing form of the species, such a plant will clearly remain a prize for collectors only. After 15 years of healthy growth, a specimen of the species may fail to exceed 4' in height. Given this sluggish growth, one can only imagine the miniscule annual progress of a "dwarf form".

© Copyright Mark H. Brand, 1997-2015.

The digital materials (images and text) available from the UConn Plant Database are protected by copyright. Public use via the Internet for non-profit and educational purposes is permitted. Use of the materials for profit is prohibited.

Citation and Acknowledgements: University of Connecticut Plant Database, http://hort.uconn.edu/plants, Mark H. Brand, Department of Plant Science and Landscape Architecture, Storrs, CT 06269-4067 USA.