Pinus jeffreyi

Common Names

Jeffrey Pine, Black Pine, Jeffrey's Pine, Yellow Pine, Bull Pine, Western Black Pine, Truckee Pine, Sapwood Pine

Summary

Jeffrey pine is a long‑lived evergreen conifer native to western North America, spanning SW Oregon to northern Baja California and commonly occupying high elevations on dry, infertile, well‑drained soils (including serpentine) where it often dominates; it grows typically 25–40 m tall with a conic to rounded crown, thick deeply furrowed reddish‑brown bark bearing a vanilla‑like aroma, and needles in bundles of three that are glaucous gray‑green and 12–23 cm long; cones are 12–23 cm long with inward‑facing barbs, and seeds are 10–12 mm with wings 15–25 mm, dispersed by wind; the species is monoecious, with flowers in June–July and conelets maturing after about 13 months, seeds maturing September–October, and seed crops every 2–8 years; it is drought‑ and cold‑tolerant, wind‑firm with a deep taproot, and lifespan around 400–500 years.

Cultivation favors full sun and well‑drained soils; it tolerates drought and is hardy to USDA Zone 8, with growth typically slow to moderate and minimal maintenance; regeneration relies on open sites and release from competing vegetation, with rapid germination in spring after seedfall and seed crops every 2–8 years; propagation is by seed, while pruning is minimal; pests include Jeffrey pine beetle, aphids, and flathead borers, and diseases Armillaria, Phytophthora root rot, Western gall rust, with mistletoe possible; resin yields n‑heptane and is used for various products, lumber, veneer, and pulpwood, while seeds provide wildlife food, though not widely distributed as a landscape tree.

Lifecycle

Perennial

Height

40-200 feet

Spread

19-30 ft

Hardiness Zones

Zones 6-8

Sunlight Requirements

Ideally full sun; also suitable in partial shade

Soil Type

Well-drained, loamy soil

Soil Drainage

Well-drained soil

Soil pH

Tolerates all pH levels

Bloom Color

Brown, Yellow, Yellow to yellow-brown (pollen cones)

Bloom Time

Spring

Foliage Color

Blue-green to gray-green foliage

Fall Foliage Color

No fall color

Leaf Lifecycle

Evergreen needle

Growth Rate

2-3 feet per year

Seasons of Interest

Spring, Summer, Fall, Winter

Propagation Methods

Seeds, Cuttings (unusual and difficult)

Attracts Wildlife

Attracts birds and butterflies