What are the precautions for fertilizing orchids?

OrchidsFertilizing must be done with great care, striving not to damage the roots. Fertilizing too frequently, too concentrated, or using too much base fertilizer will all cause the accumulation of toxic salts, harmingorchidroots and causing death. It is better to use less or no base fertilizer, dilute more, and fertilize more frequently. This matches old Chinese experience: prefer frequent and light, avoid sudden and heavy. For example, after cow dung ferments for 2-3 months, it can be diluted to a light tea color, clarified, and the residue removed before use; chemical fertilizers are generally diluted to one-thousandth to one-ten-thousandth. The diluted liquid fertilizer is best sprayed onto the leaf surface with a fine nozzle.