Douglas Firr Plant Food & Growing Guide

Douglas Firr primarily requires nitrogen, phosphorus, and potassium for optimal growth.

Douglas Firr generally doesn't need to be fed if planted in nutrient-rich soil, but if necessary, a slow-release fertilizer can be applied once a year in early spring.

While homemade plant food can suffice for Douglas Firr, a specialized product formulated for evergreen trees would provide more balanced and targeted nutrition.