Orchids receive most of their nutrients from water and the air instead of from the soil. They root in sterile medium that contains few nutrients. The flowers bloom throughout the winter months, remaining in bloom for four months or longer. Orchids begin producing new foliage and roots after the flowering period ends. Proper care after flowering ensures healthy new growth that supports future blooming periods on the plant.
Cut off the flower head once it dies back using sharp shears. Trim away yellowed leaves.
Repot the orchid if the roots have reached the edge of the current pot, or approximately every three years. Turn the pot upside down and slide the orchid out into your hand.
Inspect the roots. Trim off any roots that are dead and brittle.
Place a 5 to 7.5 cm (2 to 3 inch) layer of a potting mix formulated for orchids in the bottom of a new pot. Use a pot one size larger than the old pot.
Set the orchid into the new pot. Adjust the potting mix under the roots until the orchid is planted at the same depth it was at previously. Fill in around the roots with additional potting mix.
Set the orchid in a brightly lit window. Water the plant thoroughly when the soil dries completely in the pot.
Phalaenopsis orchids are one of the more commonly grown orchid varieties in the home.