Find a small, shallow container that can easily accommodate a dome-shaped plastic covering; a perfect example is the plastic container and lid that holds a precooked roast chicken at the supermarket.
Fill the container with two parts organic matter such as loam, peat moss or compost and one part sand or perlite.
Spread epiphyllum seeds over the top of the soil, followed by a light sprinkling of soil to cover them; mist the soil with water from a spray bottle until it is damp.
Cover the container with a dome-shaped, waterproof covering that allows for a few inches of growth. Place it in warm, filtered sun.
Remove the cover after seven months and transplant individual plants into 3-inch peat pots; move to 4-inch pots around 15 months and 6-inch pots at 21 months.
Maintain evenly moist soil once the cover is removed from plants but never let the soil become soggy.
Fertilize with a balanced commercial fertilizer such as 10-10-10 every month from spring to fall once the plant is well-established; don't fertilize in the winter.