Photo by Melody

PlantFiles: Styles' White Pine
Pinus stylesii

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Family: Pinaceae (py-NAY-see-ee) (Info)
Genus: Pinus (PY-nus) (Info)
Species: stylesii

Category:
Trees
Conifers

Height:
over 40 ft. (12 m)

Spacing:
30-40 ft. (9-12 m)
over 40 ft. (12 m)

Hardiness:
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)

Sun Exposure:
Full Sun

Danger:
N/A

Bloom Color:
Unknown - Tell us

Bloom Time:
Unknown - Tell us

Foliage:
Evergreen
Blue-Green

Other details:
Drought-tolerant; suitable for xeriscaping
Provides winter interest

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting:
Allow unblemished fruit to ripen; clean and dry seeds
Properly cleaned, seed can be successfully stored

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Resin On Jul 25, 2008, Resin from Northumberland
United Kingdom (Zone 9a) wrote:

Newly described (July 2008) from the Sierra Madre Oriental in northeast Mexico, formerly included in Pinus strobiformis (from the Sierra Madre Occidental in northwest Mexico), from which it differs in relatively shorter, broader cones with different scale shape.

Tree up to 25m tall, with a trunk up to 60cm diameter with grey bark, smooth on young trees, becoming square-cracked with age. Needles in bundles of five, 7-12cm long, outer face glossy green, inner faces with conspicuous blue-white stomatal bands. Cones 12-25cm long, 8-13cm broad when open, green ripening yellow to orange-buff. Seeds large, 13-18mm long, with a vestigial wing.

An attractive tree similar in garden value to other white pines; probably more drought tolerant than Eastern White Pine P. strobus, but less cold hardy. As with other related white pines, probably susceptible to white pine blister rust Cronartium ribicola.

Named after Brian Styles (1934-1993), formerly of the Oxford Forestry Institute and senior author of a monograph on Mexican pines.



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