This information can be modified in special cases. Premature bad condition of the plant material or particular vigor can u. U. make a premature necessary. On the other hand, you should by no means act schematically and replant, if it does not seem necessary. All in all, with all caution and the most gentle treatment of the roots, transplanting is a tough operation, which one does not do without compelling reason. The time of transplanting depends on internal and external conditions and is relatively narrowly limited. It can be influenced to a certain extent by the environmental conditions, as far as they can be regulated by us. The best time is the beginning of the growing season with the onset of new roots- and instinct formation. The plants will more easily overcome the disturbance caused by transplanting, and the annual shoot will mostly develop normally. Generally, new roots begin to form around mid to late January. Under less favorable conditions – or, depending on the species, this can, however, only be the case much later. It can be influenced by relatively low temperatures and low humidity; the root that sets in later- and shoot development also requires later transplanting. The cheapest time to transplant, which ensures a normal development of the annual drive, is roughly in the months of March to May. August was considered the most favorable date for Phalaenopsis; now you can transplant as needed at any time of the year with the exception of the winter months. Paphiopedilum can be transplanted as early as January-February, but also in April-May.