Sow the seeds during early spring months. Select a cleared area with full sun. Competition from other plants may affect its growth. An average annual rainfall of 11 to 24 inches is best for this type of pine.
Water the seedling only during extreme droughts. Ponderosa pines tolerate drought well, but the seedling's chance of survival is reduced in heavy moisture.
Remove weeds and other competing plants from the area for the first 3 to 6 years. This allows the tree plenty of air circulation and sunlight.
Thin the seedlings to encourage the remaining to develop larger crowns.