5 ways to improve the garden this week, May 25-31

1. Trees need to feed
Feed citrus trees once again. Mature citrus trees need a yearly total of 1.6 pounds of actual nitrogen fertilizer, divided into four equal portions applied in late January, early March, late April and early June – about six weeks apart – and distributed around the drip line. Since one pound of any dry fertilizer equals about two cups, that is about four cups of ammonium sulfate, two overflowing cups of ammonium nitrate, or 1.5 cups of urea, each time you apply i