Phaius’s orchid (Phaius tankervilliae or Phaius grandifolius), also known as nun’s orchid, is a brightly colored terrestrial orchid with 3- to 4-foot tall stems with tubular or hooded flowers that can be as long. up to 5 inches. They bloom mainly in late winter and early fall, and prefer a moist, well-drained potting mix as well as plenty of fertilizer.
Source: One Garden
Light
Place phalaenopsis in an area that receives lots of filtered, indirect sunlight, such as a north or east facing window, or place it about 5 feet from a window that receives direct sunlight, or underneath a tall tree or plant. Orchid needs to be protected from the hot midday sun. During winter, move the plant to a bright and sunny location.
water
Water the phalaenopsis regularly until the water runs through the bottom of the pot. If the top 2 inches of the media feel dry, water it. Orchids grown in the ground may require less frequent watering.
Fertilization
Apply a water-soluble 20-20-20 diluted at half concentration once a month, or apply a slow-release 20-20-20 fertilizer every three months. Fertilizing fish or tea compost every two weeks during the orchid’s active period can help encourage growth.
Humidity
Keep orchids in an area of at least 40 degrees F with humidity above 40 percent. If the humidity is too low, place the orchid on a tray filled with small pebbles and water, but do not let the water touch the bottom of the pot.
Split the tree
Divide and repot after they finish flowering. Turn the plant over to its side and carefully slide the pot away. Use a sharp knife to separate each pseudobulb, keeping the roots intact. Grow them in sterile, well-drained pots and take care of them regularly. The potting soil should contain sand and perlite in equal parts to improve drainage.
