Monthly Tip

While there are several possible causes for yellow citrus leaves, the most likely one in winter/early spring is that citrus roots do not absorb nitrogen efficiently from cold, wet soils. There may be adequate nitrogen in the soil, but the roots aren’t able to take it up. However, if the tree doesn’t green up when the weather warms, give it some nitrogen fertilizer, up to 1 lb of N per year for a mature, full-size tree. Dwarf trees or ones in containers require less fertilizer, 1/2 lb of N or less. Do not overfertilize since that may cause other problems.

More information: Growing Great Citrus