Thanks for everyone's response :) Hi meyermike_1micha, I know I overwatered from having the pot sitting on the floor with a plastic water catch thing. It sat in water for a bit before I had someone help me get it onto the rolling crate that it now sits on. I did notice one really small bug by the underside of the pot when I was flushing the soil. But other than that, nothing else. As far as freezing, I don't think so. I brought the tree into the house early October, but there were a couple of nights the temp. was around 45-50 degrees, so maybe that?? I had been watering it once a week, with 1 pitcher of water until the time that I watered with an additional pitcher (which I thought it looked like it needed) and then discovered the extra water in the base pan the next day. I am an inexperienced gardner and have no idea what to do other than getting some additional lighting (grow lights??) Should I flush the soil again, just in case my cat had pee'd in the pot? Should I give it some kind of food/fertilizer?

Hi Jessica! No, salts are not an issue unless of course you gave your plants sips for weeks and over fertilized.. In fact I was going to tell you to check for pest Jessica. In particular spider mites. I have the feeling your plant is still adjusting to the mix along with environmental or cultural changes. It may and not taking up nutrients for some resason. Some of the very top pictured leaves also look as if something was sucking the moisture out of the leaves which is why they look puckered a bit. Is the plant outside now? What temps are you getting? Also, there is no need to water with vinegar right away, not that is will cause any harm, but the mix you started out with started out at a good acidic level. It will take a while before you notice issues with any mix, unless of course your water is very alkaline. Have you had your water tested or called the local municipal water provider to find out what it is at? Mine is at 8.5 I remember that happening to my leaves while I had spider mites, when I forgot to add gypsum to my mix before using FP, when the nights were too cold, when I introduced my plants too quickly to sun outdoors, and when the temp swings were to drastic, which can cause nutrient delivery problems which in tune can cause an Iron, Mg, or Nitrogen problem Were the leaves sort of looking like that before you transplanted? Eventually, it corrected itself. Yes, posting at the container forums will give you many more ideas too. This may be a matter of a process of illumination. I would start with concentrating on keeping your plant anywhere where it gets lots of sunlight and consistent temps, along with a check over for pest and feed well. All should fall together perfectly and you should see a stark improvement. Do not even think about worrying about the mix, since I can assure you it is just perfect. Mike:-)))))

Definitely sounds like spider mites. Hose down the tree really well every day, focusing on the undersides of the leaves using a strong stream. And then spray as you've been doing, just take care not to spray any soapy solution or oils on days that you'll be having temps over 85 degrees, to avoid burning the leaves. Seems to be the year for spider mites, sigh. I am having some issues at my place on a Star Jasmine (the culprit - was sick when I brought it home from the nursery), which has spread to my two junipers (particularly susceptible), and I just noticed one of my citrus - my new Oro Blanco grapefruit - all have spider mites. Very frustrated as I cannot spray right now, since our temps have been over 90. As far as seeing damage, it can be very subtle. Are the tops of your leaves looking faintly speckled? That's usually the first sign of spider mites. Patty S.

Evidently the friend looked at it differently. Was the tree removed to his residence. If so, the loss of leaves is a common result of a changing environment. I suggest you not change its soil until the plant is ready to add new growth. Then, changing its soil and possibly going up one size of pot, will add to the encouragement the plant will use for spring growth. AT this time, follow what fertilizer regimen you have done in the past. Citrus are heavy feeders and, much like the African Violet, can be fed with every watering. A fish emulsion or high potassium fertilizer can be given. Sunlight at this time is very low and your citrus will benefit from being given as much, and as equally, as possible. Place it where it can receive the best light...a southern or western exposure and turn it 1/4 turn every day or so so that the crown receives all the sun it can use.