I have Bonsai tree which it's leaves have been turned brown and falling, even the green leaves are falling.
The tree has been kept inside then moved outside, the issue still appearing.
The below remedies have been tried after noticing the falling of the leaves with no improvement :
- Change the soil.
- Increase the humidity with a air humidifier, after leaves felled ( no improvement ).
- Increase light exposure.
- Fertilize it with NPK 20 20 20