Bryan McAllister’s personal reference notebook
July 30, 2026Short & citedBlog
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Field Notes • Tree

Pine

Pine is a genus of evergreen coniferous trees and shrubs in the family Pinaceae, with about 115 species.

Updated July 30, 20261 min readCited sources

Pine is a genus of evergreen coniferous trees and shrubs in the family Pinaceae, with about 115 species native mainly to the Northern Hemisphere.

What it is

Pines are conifers in the genus Pinus, known for their needle-like leaves arranged in bundles called fascicles. They produce woody cones instead of flowers and are evergreen, though older needles are shed over time. Species range from small shrubs to tall trees, typically reaching 15–45 m in height.

Why it matters

Pines are ecologically important as habitat trees and economically valuable for timber, paper products, and resin. In Canada, they are widespread in boreal and temperate forests, serving as key timber species. Some pines are adapted to harsh climates, dry soils, or fire-prone environments.

Key details

Pine identification relies on bundled needles, cone shape, and bark texture. Lifespan varies by species; many live for centuries, and bristlecone pines are among the longest-lived trees on Earth. Pines differ from spruces in that their needles grow in bundles rather than singly.

In short

  • Pines are evergreen conifers with needle-like leaves in bundles.
  • They are native mainly to the Northern Hemisphere and include about 115 species.
  • Pines are vital for timber, resin, and as habitat in Canadian forests.
  • Some pine species can live over 1,000 years.
Canadian angle

Pines are widespread in Canada and are important in Canadian forests, especially as timber species and as part of boreal and temperate ecosystems.

Quick questions

What are pine trees?
Pine trees are evergreen conifers in the genus Pinus, with needles and woody cones instead of broad leaves and flowers.
How tall do pine trees grow?
Pine height varies by species, from small shrubs to trees about 3–80 m tall, with many common species maturing around 15–45 m.
How to identify pine trees?
Look for needles growing in bundles, woody cones, and a conical growth form. The number of needles per bundle, cone size, and bark help distinguish species.

Sources

  1. Encyclopaedia Britannica — https://www.britannica.com/plant/pine
    Supports: Genus Pinus, about 115 species, evergreen conifers, northern temperate distribution
  2. Clemson University Home & Garden Information Center — https://hgic.clemson.edu/factsheet/pine/
    Supports: Needle bundles (fascicles) and identification traits such as cone, bark, and needle counts
  3. NASA Science — https://science.nasa.gov/kids/earth/mission-biomes/seedpine/
    Supports: Pines are evergreen conifers, native mainly to northern temperate regions, and shed older needles while retaining foliage year-round
  4. Encyclopaedia Britannica Kids — https://www.kids.britannica.com/kids/article/pine/388613
    Supports: General description of pines as conifers with needles and cones; size and lifespan vary by species
  5. National Park Service — https://www.nps.gov/articles/bristlecone-pine.htm
    Supports: Very long-lived pine species, including bristlecone pines