Assuming you have normally fertile soils, fruit trees are not usually fertilized at the time of planting or during the first growing season. A soil test is your best resource in determining this and helping you to spot trends in fertility over time. Some Idaho soils, however, are deficient in available phosphorus. You can safely add a cupful of steamed bone meal or 0-45-0 fertilizer to the bottom of a planting hole, mix it with a handful of soil, and plant your tree in the hole. Never add fertilizers containing nitrogen, potassium, or boron to planting holes.
August 6, 2012