Oops, I guess it would help to post a picture (sorry - my head's about ready to explode)

Hmmm, try fungicide?

Wait a day and ask the guy who can see it in person

I have to say though it looks more like a virus or deficiency

I never thought of a virus. If it is a virus (that took over REALLY fast) I guess it's pretty much as good as dead :-(

Please post an image of the entire plant.

Tell us what you did when you transplanted it. Start with these details and add any others you think might be pertinent:

- What sort of mix was it in?

- Was it outdoors or indoors?

- Where is it now -- outdoors or indoors?

- Did you trim roots? If so, explain.

- was the rootball dry, moist or wet when you transplanted it?

- Did you fertilize since the move? (If not, don't.- light level prior?

- Light level now?

To me, it looks like a burnt leaf due to heat of lights or a sudden change, as it was about to fall off anyway,......Your mix is fine..You can count count that off your list of suspects...

I would not be so quick to say it is a virus or fungus...It is common for our citrus trees to loose lots of leaves, or for leaves about to fall off to burn, especially the white variegated portions due to an entire soil change at this time of the year...)

Jane has a good agenda with all the questions..I would work with her..She is a heck of a lot more advanced in diagnosing things than many could ever be.

Aren't you the one who has been applying all that Bayer stuff? Probably pesticide burned.

lol - hobby! Yes, I do use Bayer but maybe 2-3 times a year. I did change the potting mix to 5 parts pine bark fines (screened at 1/4 inch - since our local HD or Lowes doesn't carry it I used Timberland soil conditioner) 1 part perlite and 1 part peat (I also added a little garden lime to the mix but nothing significant to really even mention.

The biggest change I added was the grow lights. My Meyer and Eureka shared the lights and the Meyer is okay other than some leaf drop. This Lemon is the tree I had the most problems with all summer long. It is my oldest Eureka (3 years) and started the summer looking gorgeous with about 12 tiny lemons (for the first time) then it got brown spot (treated with fungicide) about a month later, leaf miners and all the lemons were gone and quite a few leaves. I always fertilized with citrus-tone. It's been on a fast track decline :-(

I'll post some pics.

For some reason, the variegated just seem to give more issues than most, especially to me...Do you think it might be a rather weak cultivar?

Mike - could be, I got it from Cottage Farms.

Now this is all that's left.

Monica..Is that the 5.1.1 mix?

Man, I feel so bad..Yup, I lost mine too and I can keep anything alive, but that one seemed to get all the bugs, burnt leaves and sulked...I vowed I would never buy one again and OI don't care how cheap..In fact, all the ones at my local nursery looked like crap by the end of summer loaded with scale and mites....

Yikes! I'm surprised its still alive

Is it alive? lol

im not sure how much energy and time I should put into this tree anymore. If I could save it, I'd like to try as this was my very first citrus.

I am going to say if you have a very warm sunny greenhouse and nutrients will do the trick! Other that than that, at this time of the year I wouldn't get my hopes up(

Sadly, no greenhouse. I wish though (some day)! I'm going to try and ask my local nursery if they could help me out just until there is some sign of new growth.

Monica,

You haven't by chance been watering it with water from a water softener? Transfer into a fast draining mix with concurrent watering with water softener (read salt) might give you such a result. I would not guess fungus, nor virus to cause such a rapid decline. In general variegated citrus are all weaker and more sensitive than the standards.

John - no we don't have a water softener. Our water is quite hard. I find it odd that it happened after repotting into the 511. Unless it went into complete shock and never recovered.

Thanks for the info regarding variegated citrus being weaker and more sensitive. I won't get anymore of those (even though I really like the foliage)

Well, tht was a lot of plant for tht small pot.

Don't know what the original mix was, but managing the new one -- your version of 5-1-1) requires an entirely different mind set.

I suggest you get rid of that dying stick. That way, you'll avoid a lot of unnecessary grief.

Please realize that everyone kills plants as they learn. (After 35 years years, I'm still doing that!) The key is to learn as you go.

Then I suggest you recall that the holidays are coming. Obtain a replacement healthy tree as a gift to yourself.

Thanks Jean. I just replanted the "stick" today. It used to be in a huge container