A Detailed Guide to the Latest Cultivation Methods for Phalaenopsis Orchids

Phalaenopsis is a plant suited to indoor cultivation, with flowers shaped like butterflies. Elegant and refined. It enjoys the reputation of being the “Queen of Orchids”. The flower is the most ornamental part of the Phalaenopsis. Since most Phalaenopsis originate from humid Asia, this also determines the growth characteristics of the Phalaenopsis: an environment with good ventilation, moderate temperatures, and high humidity can be said to be very suitable for cultivating Phalaenopsis. Beginners should be clear before cultivating Phalaenopsis that waterlogging is not conducive to the growth of Phalaenopsis, and that the Phalaenopsis should be kept from being exposed to the scorching sun. When winter comes, the indoor temperature must be well controlled; when the temperature is below 15°C, the growth of the Phalaenopsis will be affected. Below, the editor will introduce the cultivation methods of Phalaenopsis in detail.

Growth Habits of Phalaenopsis

Phalaenopsis originated in tropical rainforest regions and is by nature fond of warmth and averse to cold. The suitable growth temperature is 15-20°C; in winter, below 10°C it will stop growing, and below 5°C it easily dies. Native to the tropical regions of Malaysia, Phalaenopsis belongs to the genus Phalaenopsis in the orchid family and is a perennial herbaceous plant. The forest trees along riverbanks and coasts in hot, humid areas are where Phalaenopsis grows attached.

Due to its physiological structure, Phalaenopsis can protect itself from the stress effects of low-humidity conditions, but in overly wet environments, high temperature and high humidity are often accompanied by disease. The most suitable relative humidity range is 60%-80% RH.

Propagation Methods of Phalaenopsis

1. Seed propagation method: seed propagation is sowing the seeds released from already split seed capsules into the pot of the parent plant. This method is simple and easy, requiring no complex sterile procedures or operating tools, and is suitable for ordinary home Phalaenopsis growers, but the chance of success with this method is very small and it is rarely used. There is also the sterile sowing method, in which the unopened mature seed capsules are first washed clean, then immersed in 75%-90% ethanol or chloroform for 2-3 seconds, and then immersed in a 5%-10% bleaching powder solution or 3% hydrogen peroxide for 5-20 minutes. The seeds are taken out and soaked in the same disinfectant solution for 5-20 minutes, then the solution is removed by filtration, the seeds are taken out, and a fine needle is used to spread the seeds evenly on the surface of the prepared culture medium in a bottle. The culture conditions are a light intensity of 2000-3000 lux, 10-18 hours per day, with the temperature maintained at 20-26°C. After 9-10 months, when the small seedlings have grown 2-3 leaves, they can be taken out of the bottle and planted in pots.

2. Flower stalk bud forcing propagation method: the method is to first cut off the part of the flower stalk that has finished flowering, then use a blade or sharp knife to carefully remove the bracts between the first to third nodes of the upper part of the flower stalk, exposing the buds in the internodes; use a cotton swab to evenly apply a bud-forcing agent or hormones such as indolebutyric acid to the exposed nodes of the internodes; after treatment, place the orchid plant in a semi-shaded area, keep the temperature at 25-28°C, and after 2-3 weeks the buds can be seen growing leaves; after 3 months they grow into small Phalaenopsis seedlings with 3-4 leaves and aerial roots; cut off the small seedlings and pot them, and they become a new orchid plant.

3. Heart-cutting bud forcing propagation method: after the growing point of an orchid plant is damaged by some factor, after a period of time, 1-2 new buds will grow from the stem nodes near the base of the orchid plant. This characteristic can be used to propagate Phalaenopsis.

4. Stem-cutting propagation method: the principle of the stem-cutting propagation method is to destroy the growing point at the stem tip to induce the growth of dormant buds. Although there are 1-3 dormant buds in the leaf axils of a Phalaenopsis plant, most of them cannot sprout into a plant. After the plant continues to grow upward and the stem nodes become longer, the upper part of the plant with roots can be cut off with a sterilized sharp knife or scissors and planted in a new pot to continue growing, while the lower part with the remaining rhizome is given proper water management, and before long new buds will sprout.

5. Tissue culture method: using the tissue culture method to propagate Phalaenopsis can obtain excellent genetic characteristics completely identical to the mother plant. The Phalaenopsis seedlings produced by this method are called meristem seedlings or tissue-cultured seedlings. The plant tissue (explant) used for meristem culture can be the terminal bud (stem tip), stem segments (dormant buds), or young leaves or root tips, but currently the most commonly used is the flower stalk of the Phalaenopsis.