Measure your space. Allow plenty of space when planting pines that grow to tall heights; most attain heights between 60 and 100 feet, and can be 30 or more feet wide when they are full-grown. These trees include Afghan pine; limber pine, Pinus flexilis; and Ponderosa pine, Pinus ponderosa. Southwestern white pine, Pinus strombiformis, may tower above all the others.
Contact your local County Extension about soil testing before putting middle-sized pines (20-40 feet high and 15 to 30 feet wide) in your yard. Add organic mulch to increase soil nutrition if the soil is low in nitrogen.
Choose mid-sized pines for shade and wildlife shelter. Italian stone pine and bristlecone pine attain heights around 40 feet. Single-leaf pinon matures at approximately 30 feet. Aleppos, pinons and bristlecones are bushy, while Italian stone pines are an umbrella shape.
Plant dwarf varieties of pine as shrubs close to the house. Thoroughly mulch dwarf pines to protect the graft, and check on their water tolerance so you do not overwater.
Loosen soil and remove stones when planting your pine, to let tree roots spread and establish. In poor draining areas, dig in mulch and organic compost to a depth of 1 1/2 times the rootball and twice the diameter of the tree branches.
Water new trees according to the nursery or County Extension directions.