Native to California, also in the westernmost part of Nevada, southwestern Oregon, and northern Baja California.
A rare one here: only 3 on the map (#248 of 384 species).
Show Jeffrey pine trees on the map
The scent of Pinus jeffreyi is variously described as reminiscent of vanilla, lemon, pineapple, violets, apple, and, quite commonly, butterscotch; This scent may be sampled by breaking off a shoot or some needles, or by simply smelling the resin's scent in between the plates of the bark.
The exceptional purity of n-heptane distilled from Pinus jeffreyi resin led to n-heptane being selected as the zero point on the octane rating scale of petrol.
Pinus jeffreyi is closely related to Pinus ponderosa (ponderosa pine) and is similar in appearance. One way to distinguish between them is by their cones. Each has barbs at the end of the scales. The sharp Pinus jeffreyi cone scale barbs point inward, so the cone feels smooth to the palm of one's hand when rubbed down the cone. Pinus ponderosa cone scale barbs point outward, so feel sharp and prickly to the palm of one's hands. This gives rise to the memory device for distinguishing between them - "gentle Jeffrey and prickly ponderosa".