Disinfect the pots for the new plants and the knife or razor blade you are using to cut the orchid stem with a solution of 3 parts water to 1 part bleach to prevent the plant from becoming contaminated.
Wash your hands or put on a clean pair of gloves.
Cut a stem about 12 inches long from the plant.
Cut the stem into sections 3 to 4 inches long. Make sure each piece has at least one dormant bud.
Place the cuttings on damp sphagnum moss, and place them in a humid, shaded place. Keep them there until the buds begin to grow small plants.
Fill the pots with standard orchid compost.
Plant the new orchid plants into the pots.
Fertilize the orchids with a 10-10-10 fertilizer. The number indicates the ratio of nitrogen, phosphorous and potassium in the fertilizer.
Move the plants to a humid location where they will receive 12 to 14 hours of light daily. Water them once a week.