Pinus torreyana
Torrey Pine
General Info
Torrey pine, occurring naturally only in two groves in southwestern California, is the rarest pine in the United States. Only about 5,000 wild individuals grow along the coast of northern San Diego, almost entirely in Torrey Pines State Natural Reserve and in a small grove on Santa Rosa Island. It is listed as Critically Endangered by the IUCN.
Outside their narrow native range, these trees thrive in cultivation and have naturalized in several areas along California’s Central Coast, including northwestern Santa Barbara County, coastal San Luis Obispo County, and along Monterey Bay in the town of Marina. Torrey pines grow slowly into picturesque broad-canopied trees. They are the only five-needle pines in California with long needles. Like their relatives, Coulter pine (Pinus coulteri) and foothill pine (Pinus sabiniana), they have long, gray-green needles and large cones that can remain on the tree for years.
Native Range: California
Ethnobotanical Info / Tree Use: The pine nuts of this tree were used by the Kumeyaay tribe of the San Diego area.
The tree has been planted for commercial plantations in Australia, New Zealand, and Kenya.
Schoolyard Use: This tree has long, slender needles that grow in clusters, making it an excellent example for studying needle morphology and adaptations to arid environments. Its large cones can be used in lessons about seed dispersal and the role of fire in ecosystems. The tree’s thick bark and unique growth patterns can also be explored in discussions about plant resilience and survival strategies. The tree thrives in coastal areas, adding a layer of interest regarding habitat specificity and ecological interactions.
Tree Shape: Conical or Vase
Foliage Type: Evergreen
Maximum Tree Height: 50 feet
Canopy Width: 20-25feet
Growth Rate: ~36in/year
Leaf Arrangement and Form: Alternate and Simple
Leaf Shape: Needle
Leaf Color: Bluish Green, Silver or Gray Green
Fall Color: No
Cones: Inconspicuous
Flower Color: Brown
Reproduction: Has either male or female reproductive parts (dioecious)
Cone Size and Color: Very Large Brown Cone
Pollen time: Winter
Fruit Value: Edible and Wildlife use it
Bark Color: Dark Brown or Purple
Bark Texture: Fissured
Litter Type: Dry Fruit
Recommended Planting Area: Greater than 7′
Water Use Rating: Low
Sunset Climate Zone: 8 – 9 and 14 – 24
Soil Texture: Loam, Sand or Clay
Soil pH: Very Acidic to Slightly Alkaline
Salt Tolerance: High
Schoolyard Trees: Yes
Shade Tolerance: No
Branch Strength: Medium
Root Damage Potential: Moderate
Potential health issues: Allergy
Biogenic Emissions: Moderate
Wildlife Interactions: and Attracts Birds and Squirrels
Disease and Pest Susceptibility: Armillaria, Pitch Canker, Aphids, Beetle Borers and Spider Mites
Disease and Pest Resistance: Verticillium
Utility Friendly: No