Answer: Apply a lawn type fertilizer (no weed control ingredients) with a nutrient ratio of about 3-1-2. Examples would include 15-5-10, 21-7-14, and 16-4-9. Apply about a cup per inch of trunk diameter to the entire area beneath the branch spread of the tree, and just beyond. Make the applications in late February, early April, mid June and late July.
Water the fertilizer in well after application, and mulch the soil to control weeds and help maintain moist conditions.
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