[4] Pinus quadrifolia is a small to medium size tree, reaching 8 to 15 m (26 to 49 ft) tall and with a trunk diameter of up to 40 cm (16 in), rarely more.

The low density of organic material in areas where the Parry pinyon is found reduces the risk of fires spreading.

However, due to low-hanging branches and thin bark, the Parry pinyon itself is susceptible to fire.

[7] The edible seeds, pine nuts, are collected throughout its range, though it is much less important than Colorado pinyon (P. edulis) for the crop.

[8][9] The Cahuilla tribe of southern California used the resin to make a face cream commonly used by girls to prevent sunburn.

For the Cahuilla, the nuts were given to the babies to eat as an alternative from breast milk and were also grounded then mixed with water as a beverage.

The pine needles and roots were used as material for basketry and the bark was a reliable substance for making the roofs of houses.