Lime Tree help

[SFloridaGardener]

I purchased a Mexican key lime tree from Lowe's several months ago and it has been doing great (at least I think so)...but recently I noticed some discoloration in the leaves and on the fruit..any idea what causes this? I water regularly and have used Organic Citrus Tone NPK food as directed on package. Also, I was reading the limes should turn yellowish when ready but they seem to be staying dark green and the same size for about a month now. Any help would be appreciated.

[catgrass]

You might check the Florida extension website. There is a disease becoming prevalent in our southern states that affect citrus. All of the state extensions offices want to know if you are having a problem with citrus so they can identify what it is and the extent of coverage. I am not familiar with it, only what I have read in the LSU bulletin.