Fertilize orchids before, during or after flowering? Experts give tips. If you fertilize too much, the roots can burn from the high amounts of salt.
Repotting recommended every two to three years - this applies to all types of orchid. The orchid Dendrobium nobile and its relatives must have rest periods, otherwise they will not bloom. Some genera, such as Phalaenopsis, have no rest period, so you can fertilize all year round.