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Woody > Pinus > Pinus monophylla > Pinus monophylla

Pinus monophylla


Single-Leaf Pinyon




Family
Pinaceae
Genus
Pinus
Species
monophylla
Category
Woody
Type
Tree (evergreen)
Pronunciation
USDA Hardiness Zone
6
Canadian Hardiness Zone
5a - 6a
RHS Hardiness Zone
H6 - H7
Temperature (°C)
-23 - (-18)
Temperature (°F)
-10 - 0
Height
10 - 20 m
Photographs
Description and Growing Information
Flowering Period
General Description
Pinus monophylla or Single-Leaf Pinyon is a slow growing, rounded to flat topped tree with a short trunk, dark brown branches and grey-green to greenish-blue needles. Mature trees are typically short and can be multi-stemmed.
Cultivation
Grows well in a hot and dry location, in light, well-drained, sandy or gravelly loam. Long lived and drought tolerant.
Shape
Starts out pyramidal; more mature trees are rounded to flat-topped.
Growth
Slow
ID Characteristic
Needles are 1 -2 in a cluster, rigid, curved inwards and grey-green.
Pests
Susceptible to needle scale, weakening the tree and making it vulnerable to bark beetles.
Habitat
Woodlands.
Bark/Stem Description
Irregularly furrowed and scaly, light or dark brown with red or orange coloured scales.
Flower/Leaf Bud Description
Brown, egg-shaped with scales.
Leaf Description
Usually single, stout, 4 - 6 cm long, grey-green to strongly glaucous blue-green, with stomata over the whole needle surface.
Flower Description
Yellow.
Fruit Description
Cones are acute-globose, the largest of the true pinyons, 4.5 - 8 cm long and broad when closed, green when young and ripening to yellow-buff, with a small number of very thick scales, typically 8 - 20 fertile scales.
Colour Description
Needles become a greenish-blue colour in summer.
Ethnobotanical Uses (Disclaimer)
The seed is edible.
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