Pinus coulteri Pinus coulteri Pinus coulteri
Coulter Pine stand
Common Name Coulter Pine
Latin Name Pinus coulteri
Family /Origin Pinaceae / Named for Thomas Coulter, Irish botanist and physician
Sunset zone / USDA zone 3-10, 14-23 / 8,9 
Type / Form Tree / Medium to large
Native Habitat Dry slopes of mountains of Southern California. from 1,000 to 7,000 feet
Soil Dry to moist, decomposed granite, sand, clay loam, limestone, low to some organic content, well drained
Exposure Full sun
Water Once to twice per month depending on soil in hot weather
Height X Width To 40 feet X 20 feet , 70 feet tall unusual
Protective Mechanism None
Leaves Evergreen needles, 8 to 12 inches long, stiff and straight, in fascicles of 3, gray-green with lengthwise rows of stomatal bloom. Crowded near the ends of branches, persist 2 to 3 years
Flowers Monoecious; male cones yellow in tight clusters; female cones dark red-brown
Bark / Roots Mature bark is dark gray to black, deeply furrowed with scaly ridges
Maintenance None
Propagation It is best to sow the seed in individual pots in a cold frame as soon as it is ripe if this is possible otherwise in late winter. A short stratification of 6 weeks at 4c can improve the germination of stored seed. Plant seedlings out into their permanent positions as soon as possible and protect them for their first winter or two. Plants have a very sparse root system and the sooner they are planted into their permanent positions the better they will grow. Trees should be planted into their permanent positions when they are quite small, between 30 and 90cm. We actually plant them out when they are about 5 - 10cm tall. So long as they are given a very good weed-excluding mulch they establish very well. Larger trees will check badly and hardly put on any growth for several years. This also badly affects root development and wind resistance. Cuttings. This method only works when taken from very young trees less than 10 years old. Use single leaf fascicles with the base of the short shoot. Disbudding the shoots some weeks before taking the cuttings can help. Cuttings are normally slow to grow away.
Pests and Diseases Western Pine Beetle
Landscape Uses Erosion control, low maintenance
Garden Suitability Thornless, Songbird, Fragrant, Mountain, Ethnobotanical
Nature Value Nuts eaten by squirrels and birds
Native American Uses Nuts eaten raw or baked, long needles used to make pine needle baskets
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    Nursery Oak Hills Nursery, 13874 Ranchero Road, Oak Hills, 92345, 760-947-6261
    Distribution map
Note: Moderate pollinator and high fuel factor = fire danger.