How-To Features Tree Registry Register your trees for customized advice. Fall Care Kits Prepare your trees and shrubs for winter with this kit containing specially formulated fall fertilizer and the TreeHelp Bug Band insect trap. The Western White Pine favors deep porous soils with medium acidity but will tolerate soils of poorer quality. Seedlings can benefit from partial shade up to five years and full sun thereafter.
Growth can be very slow with seedlings started in nutrient-rich soil doing best.
Western white pines are generally drought intolerant. Things to Watch For Fusarium, a damping off disease, and neopeckia coulteri, a snow mould are dangers for young seedlings. A root rot, rhizina undulata, is also a problem in seedlings under 5 years. Birds and insects can also kill young seedlings.