Try spraying it with a vegetable grade garden fungicide. I am interested too.

Steve

Can you post a picture how large the tree is? I think the 20" pot may be to big for a young tree.

poncirusguy: do you think a copper spay may be appropriate?

dont spray it with anything ... until you have fully IDd a problem ...

in the first pic.. why are there water spots on it already ..

trees like a high drainage media ...

inside lights usually need to be a lot closer to the leaves.. to be effective .... what is a sun lamp????

ken

Looks like salt burn combined with waterlogged roots to me. What kind of soil is it in?

Tom1338733 I Read somewhere about salt burn so as of 2 months ago i stared watering my citrus with rain water. Is there something more that I can do? I couldn't find a lot of help on the subject.

The waterlog: i have made sure that the soil completely finishes draining in 30 minutes and wait till the soil is dry a few inches deep. This usually means watering it approximately every 10 days or so. Is there something more I can do to improve the moisture level in or near the roots?

The soil is 1/3 peat moss and 2/3 lowes generic gardening soil.

ken-adrian, I had read about a few possible fungal causes prior to posting this request for help. Therefore in an effort to resolve the issue I did spray it with copper spray. I use copper spray regularly on my apple tree and peach tree and know it won't hurt the tree regardless of the problem. Those are the spots you see on the leaves. If nothing else, the spray will help to prevent anything new from forming on the weekened and damaged leaves.

The "philips grow light" I use can not be put any closer as the heat fries the plant. However, the lamp has kept the plant vibrantly green and helped it to produce new growth dispite it being indoors for 8 months now. I am confident the lamp is not the issue or the tree would not have new growth and would probably be dead after 8 months.

Drainage: I have made sure that the soil completely finishes draining in 30 minutes.

It looks to me like it may have a root issue possibly caused by too much perched water at the bottom of the pot. A copper spray won't hurt but it won't help if this is the case. I would take the tree out of the pot to investigate. It may need root washing, root drenching with appropriate for Phytophthora sp. fungicide and repotting in a smaller pot with more free draining medium. Appropriate fungicide drastic ingredients include fosetyl-al, dimethomorph and mefenoxam but there may be others too.

This tree is in soil like yours. The vacuum cleaner draws fresh air for the root.

New Zealand lemonade on US897 rootstock. · More Info

I think your pot is too big. How much room is between the rootball and the sides of the pot?

nikthegreek-gw

Thank you. I found your reply informative and helpful! I will repot and investigate the roots and bottom of the pot.