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Pinus jeffreyi

Jeffrey Pine

A large pine that grows between 20 and 40 m (65 and 130 ft.) or more tall and has a sturdy, straight, thick-barked trunk to 1.2 m (4 ft.) in diameter. The crown is tall and conical or rounded, the long, pale blue-green, needle-like leaves can reach 22 cm (9 in.). Pinus jeffreyi grows in mountainous areas on dry, often poor soils, mostly between 2000 and 3100 m (6600 and 10200 ft.) from southwestern Oregon through eastern and southern California onto the Baja California peninsula. It is a nice ornamental and a good timber tree that adapts well to a range of conditions, is hardy to fire, drought and severe freezes, although, as a mountain tree, it does not appreciate hot, humid summer conditions or air pollution. Suitable for USDA plant hardiness zones 6 to 8. Seeds require cold stratification for 2 months after soaking and sowing.

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If you wish to read more on palm cultivation, we highly recommend Ornamental Palm Horticulture by Timothy K. Broschat and Alan W. Meerow, available in our bookshop.

Ratings and comments reflect individual experiences and the views of our visitors. They do not necessarily describe the most appropriate methods, nor are they necessarily valid for all seeds or plants of this species. Germination and plant cultivation success depends on many different factors; nevertheless, these experiences will hopefully aid you in your effort to get the best germination results from our seeds and the best growth results from your plants.

We recommend:
The Encyclopedia of Cultivated Palms

The Encyclopedia of Cultivated Palms
by Robert Lee Riffle, Paul Craft, Scott Zona

2nd edition
Completely revised and updated

Hardcover - 528 pages
11 x 8.5 inches

Our rating:
Suitable for: all

The Encyclopedia of Cultivated Palms is the definitive account of all palms that can be grown for ornamental and economic use. Palms are often underutilized as a result of their unfamiliarity—even to tropical gardeners. To help introduce these valuable plants to a new audience, the authors have exhaustively documented every genus in the palm family.
825 species are described in detail, including cold hardiness, water needs, height, and any special requirements. Generously illustrated with more than 900 photos, including photos of several palm species that have never before appeared in a general encyclopedia, The Encyclopedia of Cultivated Palms is as valuable as an identification guide as it is a practical handbook. Interesting snippets of history, ethnobotany, and biology inform the text and make this a lively catalog of these remarkable plants.

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