Rubber trees (ficus trees) that do not grow new leaves can be caused by a variety of reasons, here are some possible reasons and how to deal with them::
Insufficient light:
Reason:Rubber trees prefer bright light and may affect the growth of new leaves if left in a shady environment for long periods of time.
Processing:Move the rubber tree to a bright location away from direct sunlight, making sure it receives enough light each day.
Moisture Issues:
Reason:Too much or too little water can cause the rubber tree to not grow new leaves. Soil that is too wet can cause root rot, while too dry can cause plants to lose water.
Processing:Make sure the rubber tree's soil is moderately moist, but not too moist. Check the moisture of the soil before watering to avoid over- or under-watering.
Temperature issues:
Reason:Rubber trees are temperature sensitive, and if the ambient temperature is too low, it may inhibit the growth of new leaves.
Processing:Provide a stable warm environment and avoid exposing the rubber tree to cold air, especially in winter.
Nutritional deficiencies:
Reason:Deficiencies in key nutrients, such as nitrogen, phosphorus, potassium, etc., may affect plant growth.
Processing:Use the right amount of plant fertilizer, especially fertilizers rich in nitrogen, phosphorus, and potassium, and apply fertilizer according to the instructions on the package.
Root Issues:
Reason:The root system of rubber trees can be affected by diseases, insect infestations, or lack of space.
Processing:Check if the root system is healthy, and if there is a disease or pest, you can take appropriate ** measures. If the rubber tree has grown, consider whether a larger container is needed.
Seasonal reasons:
Reason:Rubber trees may be dormant and grow differently depending on the season.
Processing:If everything else is normal, it may just be that the rubber tree is going through a dormant period of growth, wait a while to see if there are any new signs of growth.
If the rubber tree still does not grow new leaves after trying the above methods, it may be necessary to take a closer look at the overall condition of the plant and consider whether it is necessary to seek the advice of a professional botanist or horticultural specialist.