How much 16 16 16 fertilizer do you apply on new trees?

When applying 16-16-16 fertilizer to new trees, a general guideline is to use about 1 pound of fertilizer per inch of trunk diameter. This should be divided into two applications—one in early spring and another in late spring or early summer. It's essential to distribute the fertilizer evenly around the root zone, avoiding direct contact with the tree's trunk. Always follow specific soil test recommendations and adjust based on the tree species and local conditions.