Sit-Sat..how long do you keep the sprinkler running? Does water aim at your other citrus tree/s? And do you spray other citrus with nitrogen? Toni

Toni - I brought a few leaves into my neighborhood garden center and they told me I am overwatering the tree. I was running 3 times a week and the cara cara navel right next door was getting the same amount of water and starting to show similar signs - brown spotting and very yellow leaves. he said to water once a week and feed every 10 days with citrus food (fertilizer). I have followed these directions (at the expense of my front lawn!) and we have had a heat wave here in southern california with a week of 100 degree plus temps. The bottom line is the tree hasn't changed at all, still very yellow/varigated yellow with brown spotting. don't know what else to do...

I grow nasturtiums and find the soil beneath them really stays damp when everything else dries out. A year or two ago I was killing a Meyer Lemon and finally decided to remove the humungous old flowered parsley plant in front of it. The ground under the parsley plant was really wet even though I barely sprinkle there, and it was keeping the roots of the lemon wet. Is there anything preventing evaporation of that equal watering you provide both plants on the one that's croaking?

You might have hit upon it! The soil under the nasturtiums is very damp and they mostly cover the grapefruit tree. The dwarf cara cara navel right next door is showing some signs, but nothing like the grapefruit tree and that tree has an azalea bush in front of it and not many nasturtiums at all. would you recommend pulling out the nasturtiums in front of the grapefruit tree and replanting some else at its base that would better absorb water????