Caring for Citrus Trees with a special fertilizer formulated
The first issue was nutrients which fed our trees with a special fertilizer formulated for citrus trees. This provided nitrogen, phosphorous and potassium (N, P and K), as well as zinc, magnesium, iron and copper, important trace minerals for citrus. Nitrogen is the most essential nutrient. A mature tree needs about 1 pound of “actual” nitrogen per tree per year. Commercial fertilizers contain varying levels of ammonium nitrate or ammonium sulfate, which have different percentages of actual nitrogen. So be sure to determine the pounds of actual nitrogen when applying fertilizer. We applied the fertilizer in 3 “meals” in the spring and summer, instead of applying it all at once. The most critical time to supply nitrogen for citrus is between late February and March, before the big flush of growth in the spring.
