hi, they gave me a ginseng bonsay about 1m high. I noticed that some leaves have black spots, and they lose several. I keep it in front of the window and the bathroom once a week, the temperature is 19-20 degrees. Can you help me?
Evergreen bonsai are in a period of vegetative rest during the winter, even if they have healthy and luxuriant leaves; for this reason the winter watering is sporadic, to be provided only when the soil in the pot is very dry. Rather, the leaves are vaporized with demineralized water to increase the humidity of the air. It may also be that your plant suffers from blows of air received when you open the window.