Mericloning an orchid is a method of propagation to start new orchid plants from an original, mature plant, according to Texas A&M University. White mericlone orchids may be of any orchid variety, such as the Venezuelan Wagneri variety or the Brazilian Cattleya bicolor, which is a mix of white and yellow. Take proper care of your mericlone plant to keep it blooming and growing for many years.
Place the bare-root white mericlone orchid plant in a two-quart plant pot. Filled the pot with a sphagnum moss mix intended for growing orchids, or medium-sized bark chips.
Water the orchid plant. Apply enough water to evenly moisten the sphagnum moss or bark chips, and water again only when the potting material has dried out. Observe the orchid plant's leaves for signs of dehydration, increasing your watering sessions if the leaves start to look crinkled.
Mist the white orchid plant's leaves with a thin layer of water once a day. Orchids require a moderate level of humidity, and regular misting can help keep the plant moist. This is especially important if the orchid is grown indoors.
Fertilize your white mericlone orchid. Fertilization is necessary because the potting substrate doesn't provide any nutrients of its own. Use a liquid orchid fertilizer, available at most nurseries and garden stores. Apply once a month or as directed by the fertilizer's label, since potency varies by product.
Place the pot near a window or on a veranda that receives a minimum of five to six hours of sunlight per day. Orchids thrive in sunshine and require lots of it to bloom properly.