Don't laugh, I was just on there last night and saw that!!! I almost got it buddy..lol Great minds think a like

Hey, buddy, but I spoke for it night before last!

Can you help me with my questions?

Nice find Vladimir!!! I need to check around here! I don't know the answer, but I would repot because I would not want to go into winter with the tree in the bad mix. However, if you are careful about your watering, you can get away with it.

The black on Vladimir leaves is soody mold. A fungus growing on the honey due from insects. Does not do much damage. After a spray with horticultural oil, or neem it should wash off easily. - Silica

I am not worried about the mold. I am worried about the chlorosis. What is that from and how do I deal with that?

Nice find!!

Vladimir, I am no expert, but from what I have read, chlorosis can be caused by various factors: poor drainage, damaged roots, compacted roots, high alkalinity, and nutrient deficiencies. I suspect that your plant may have several of those, but under your care, it will turn green and lush in no time. Silica did mention, (and I also read this in a paper somewhere online) that the fastest way to correct nutritional deficiencies is through foliar feeding. If that were my tree, I would repot it into 5-1-1 upon a close root inspection, then I would feed it as I do my others, but add foliar feeding to it periodically. That is where I am not sure...how often?? My new grapefruit tree and a nagami kumquat I got a while back both have light leaves (well, lighter than my other trees). The kumquat is almost back to normal after 1.5 months or so, the grapefruit still needs some time. Let us know what you do and how it responds. I have no doubt that it will end up a great tree for you.

Just because it's not dark green it does not mean our trees are not healthy..Like Laura said, there are many factors to leaf coloration issues and temps you can add to that. A lack of sunlight and warmth for another. My trees are the greenest in the months of July and August or in a greenhouse under stable temps and lots of sunlight..For some reason, tap water takes away from the green color no matter how you look at it. Rain water colors mine up nice and green all the time..The ones at the local greenhouse are always green but it does not mean they are healthy...The root rot you buy with those is disguised by the amount of sunlight and warmth they receive until they arrive at your home..

Vladimir.. I would not worry about getting them totally green until you have that greenhouse up and running and more than 10 hours of sunlight. As long as you are using a good porous mix and watering correctly, they will be ok..If they green up with less than that, count your blessings..It can happen))

With your good care and ability to make things grow well, that tree should be up and running in no rime buddy..

I would love to visit some time and see you set up and maybe give you some pointers!

Meyer lemon. I'll pray for you? LOL

Laura and Mike, thanks for your comments. Mike, I would love for you to come over when †he greenhouse is done. I don't know what you mean by a "setup" but you are welcome to come over and see whatever I have.I would welcome whatever advice you may offer.

Right now I am going nuts with trying to get the greenhouse done, teaching classes, grading papers and preparing lectures and labs. So, let's get together after the greenhouse is done.

I would love to see your setup.

I don't think there is anyone within 200 miles of me that is on this citrus forum. I guess that qualifies Cincinnati as a citrus desert.

6b Steve

I would clean (and treat) all the foliage, prune off that tallest branch, repot into a fast draining mix, and then fertilize after about a week and a half. I like that thick trunk, but the overall impression is of a poorly maintained tree.

Josh