Question: mess ??

hi, last month I bought a ficus ginseng bonsai from 7-9 years in a mall (at least that's written). somewhere I read that in the middle of spring all the leaves had to be trapped and leaving a couple of them for each branch in this way would have made a new flowering with very small leaves typical of bonsai ... unfortunately I did it without thinking twice, and I don't know if I did good or bad ... will they grow back ??? how to fix it ?? Help! thanks.

Answer: mess ??

Dear Antonella,
more and more often we happen to see small bonsai in shopping centers, even in places where in general we wouldn't think of looking for a plant; they are so cute, and the impression one tries to give in the shop is that of a design or furnishing object, and not that of a living being. For this and other reasons, we find ourselves pushed to buy a bonsai, convinced by the seller that it is not a plant that needs care.
And instead bonsaism is an art, which is learned over the years, following courses, finding information on the internet, reading books, and also through practice, with tests, errors, modifications of what was learned, hand hand that is sewn to ourselves, to the place where we live, to how much time we have to dedicate to plants.
Many bonsai are now prepared with plants that already naturally grow "bonsaized", that is, simply placing them in pots tend to develop in a compact and dense way, without requiring special care; other bonsai, on the other hand, are real challenges, such as the large maples, which, when placed in the ground, would reach a few meters in height in a few years.
To make a majestic tree develop until it becomes an adult, but in a small vase, with small leaves and remaining small, there are various techniques; most of these should be carried out only by expert hands, or in any case on very well cultivated specimens, so that the cultural stress caused by defoliation, pruning of the roots, repotting in very small containers, application of metal wire, drastic pruning, are "Reabsorbed" by the plant, without causing damage.
The defoliation, in particular, is practiced trying to decrease the size of the foliage of a bonsai, when it is believed that the leaves are growing too small; it is practiced in spring, in order to stimulate the rapid development of new leaves: the plant, being forced to reconstitute its foliage very quickly, generally does so by producing very small leaves. If your ficus does not show signs of producing new foliage, I believe that the plant is now doomed, wait hopefully a few weeks before deciding to replace it.