Commercial growers have their own method of fertilizing that is done on a large scale, not practical to apply in our backyard and landscape; however the basic need of nitrogen is the same. Most nursery and garden centers carry citrus food (fertilizer) in 13-10-4 and recommend applying around Valentine's Day, Memorial Day & Labor Day.
Be sure to follow the labeled directions on the quantity to apply; over fertilizing can 'burn' the tree causing damage or even death of the citrus if it's young.
A light application can also be applied at the end of October ahead of winter lows, but be careful not to overdo it. You want to add just enough to provide a nutrient base, but not enough to encourage new growth. In the occasion there is a hard freeze in the Sonoran desert, the new growth will be damaged and can disrupt the following spring's growth.
John Eisenhower of Integrity Tree Service talks about our Tree Of The Month: The Texas Mountain Laurel, which produces a flower fragrance of grape soda. Plus answers listener question on various tree issues.
Home Maintenance Calendar: #FertilizeCitrus
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