Jeffrey pine (Pinus jeffreyi)

Native: Oregon, California, Baja and Mexico.

General Notes:

A Pinus jeffreyi in Tioga Pass Road is registered as a California Big Tree. It measures 186 feet high, with a trunk circumference of 282 inches and a crown spread of 66 feet.

Tree Characteristics

• Drought tolerant.
• Shape: Conical
• Foliage: Evergreen, Needle, Blue Green or Dark Green, No Change
• Height: 60 - 130 feet.
• Width: 20 - 30 feet
• Flowers: Inconspicuous. Flowers in Spring.
• Fruit: Brown Cone, Very Large (Over 3.00 inches), fruiting in Winter or Summer.
• Bark: Light Gray or Red Brown, Scaly.
• Shading Capacity: Moderately Dense in Leaf.
• Litter Issue: Dry Fruit.

Tree Site Conditions & Constraints

• Zone: Sunset 2 - 9 and 14 – 19, USDA Hardiness 6 - 9.
• Exposure: Full Sun to Partial Shade.

Pests & Disease Information

• Resistant: Texas Root Rot and Verticillium.
• Susceptible: Aphids, Jeffery Pine Beetle, California Flathead Borer and Beetle Borers, Oak Root Rot, Black Stain, Phytophthora Root Disease, Oak Root Rot, Mistletoe, Western Gall Rust, Needle Cast and Root Rot.

Health, Safety & Environmental Concerns

• Branch Strength: Medium.
• Root Damage Potential: Moderate.
• Health Hazard: Allergy
• Biogenic Emissions: Moderate.
• Attracts: Birds and Squirrels.

Source:

SelecTree. "Pinus jeffreyi Tree Record." 1995-2018. Mar 2, 2018. < https://selectree.calpoly.edu/tree-detail/pinus-jeffreyi >