Problem qith bottom wood tree

I have a button wood bonsais that it seems to have a problem.

Some of the leaves are showing a yellow color that it is not usual. It is receiving a lot of sunlight, it is also planted in perlite and zeolites and with a good drainage. I hope the community can help me out.

Clorosis can be caused by many different things. The key to the answer is in your care and conditions.

Given the nature of this specimen and the time of the year I would guess that low humidity is the most common reason. When temperature drop outdoors our heating systems kicks in and dries up the indoor air. This is not good for a species from damp environment.

I forgot to mention. I live in Colombia where I do not have seasons. Could it be lack of iron?

anfedres wrote:

Could it be lack of iron?

That i have also in my mind !