since the end of August we have a Ginseng Bonsai in the house, we have placed it in a sunny room but without direct light, and we have avoided drafts, I noticed that it is putting new leaves, but the old ones are all getting gray, crumpling and falling , and many of the new ones have like burnt tips… what are we doing wrong? before it was in a mall can it be the change of environment?…
ficus ginseng, or ficus retusa, are highly cultivated plants such as bonsai, because they are resistant plants, which can bear even some cultivation errors; clearly moving from the shop, where he certainly received all the necessary care, at your home, can be a source of stress. In general, the symptoms of black leaves, curled or spotted are related to the development of rot in the soil, but since I have no other indications on the plant, or a photograph, it is good to consider all the options. Ficus ginseng bear drought well enough, but prefer a cool and humid climate; this means that they love to be watered regularly, in order to keep the soil slightly damp; damp does not mean drenched with water, and excess watering, which results in a soil that is always wet and soaked, quickly leads to the development of root rot, which can ruin the plant even heavily. If the soil of your bonsai is always soaked, and the plant shows symptoms of suffering, it is appropriate to repot it, to remove the parts of damaged roots and also the soil, to replace it with fresh soil. The correct watering of the ficus is provided when the soil begins to dry: with your finger, check that it is dry, and water abundantly. Often the poor quality bonsai have a stiff and hard earthen bread, on which the water flows, without wetting it; in these cases it is advisable to water by immersion: the pot is placed in a tray and filled with water up to the outer edge of the pot; when the soil is moist on the surface, the pot is drained and put back to home. This method of watering is certainly the best for bonsai, because it guarantees that the soil is well moist in its entirety. Another problem related to bonsai concerns the environmental humidity; the air in the apartment is constantly dry, especially when we have activated the heating or air conditioning system; therefore it is advisable to periodically vaporize the foliage, or place the pot on a tray with at least 3-4 cm of gravel, which must be kept moist, so as to increase the environmental humidity. In the cold months, watering will be sporadic, but try to keep the gravel under the pot looking wet, especially if the room where you keep the bonsai is very heated.