Treating an Overwatered Citrus (I think?) - HELP!
I am new to this forum and would greatly appreciate the help of others. When I call my nursery I get a different answer every time and in the meantime I am watching my poor tree wither away.
Here's a little history. I have a Meyer lemon in a large clay/terra cotta pot that is painted a deep grey. I have had the tree over a year and it has been very healthy up until a month ago. Last fall I even got 12 really delicious lemons and this year have over 30 golf ball sized fruit on the tree. As many of you know it is VERY hot here in the summer, reaching 115 this month already. The place I had my tree in was receiving about 8hrs of sun and I started to see the fruit show signs of sun burn. I also saw a slight yellowing and cupping in the leaves. At that point I moved the tree slightly more onto the patio where it was last summer thinking the heat was too intense for the tree. Since I moved the tree it has dropped about 50% of its leaves, which are cupped, pointed down, yellowing and then falling off. The fruit is also soft. (Pic included) My nursery told me that it is being over watered and to remove 20% of the fruit which I did yesterday.
Typically I have been watering about 3x per week, not waiting for the soil to be bone dry, watering when it is still slightly damp. This is the same schedule it has been on since I received the tree.
Occasionally it would receive a product my nursery sells called "moon juice" a liquid fertilizer which they say contains "a proprietary blend of organic enzymes and amino acids, Iron, Manganese and Zinc because they are typically deficient in most warm weather soils. In addition, thiamine mononitrate (Vitamine B-1) is included for its beneficial effects on new plantings."
I have only given it the moon juice once since I moved it. They tell me to give it once a week as it "brings trees back to life" according to them.
I have also used a fertilizer in May (the tree was healthy and it was the kind you sprinkle on top and water).
It has been 4 full days since I've watered it and when I feel the tree's soil, about 3" down, it feels mostly dry with just a very small amount of dampness (by no means wet or soggy). The roots also look healthy from what I can tell but I also haven't seen them from the bottom. It may rain on Sunday so now I'm afraid to water.
Basically, how do I get this tree healthy again? If it is signs of being over watered, how do I correct it? Any advise would be so appreciated.