What Soil Is Best for Growing Phalaenopsis Orchids? A Detailed Guide to the Latest Planting Methods
Phalaenopsis is also known as the butterfly orchid, Taiwan, China phalaenopsis, and others. It is an epiphytic plant of the genus Phalaenopsis in the orchid family. The plant sends out long flower stalks from the leaf axils and produces flowers shaped like dancing butterflies, making it highly favored by orchid enthusiasts. It has long been known as the “Queen of Orchids” and has extremely high ornamental value. Now let us take a look at what soil should be used to grow Phalaenopsis!
What soil should be used to grow Phalaenopsis?
Phalaenopsis is a plant with aerial roots, so the growing medium for potting should not be soil. Instead, use sphagnum moss, pumice, tree fern shavings, crushed charcoal, and the like, or simply fix the seedlings onto tree fern boards (osmund) and let them attach and grow on their own. This cultivation method imitates its original ecological environment. When cultivating, you can choose materials such as pine needles, peanut shells, bark strands, and clay balls as the substrate for growing Phalaenopsis. It has relatively high requirements for the medium, needing breathability, resistance to rot, slight acidity, and good drainage. If you cannot prepare these materials yourself, you can directly buy special orchid soil for Phalaenopsis at a flower market.
What kind of pot should be used to grow Phalaenopsis?
For Phalaenopsis, choose bamboo woven containers, porous ceramic pots, or specially made orchid pots. It is best not to use ordinary plastic pots. Do not place well-planted seedlings on the ground; they should be hung up or placed on shelves to facilitate the extension and growth of aerial roots and to allow the substrate in the pot to absorb nutrients from the air after it dries. Be careful to avoid root rot or even death caused by water accumulation from blocked bottom holes, or underground pests getting into the pot and harming the plant. Considering that Phalaenopsis likes a breathable growing environment, it is recommended to choose porous shallow pots, preferably with a pot height smaller than the pot diameter.
Propagation methods for Phalaenopsis
1. Natural sowing method: The natural sowing method is to sow the seeds released from already split seed pods into the pot of the parent plant. This method is simple and easy, requires no complicated sterile procedures or operating tools, and is suitable for ordinary home growers of Phalaenopsis. However, the chance of success with this method is very low, so it is rarely used.
2. Sterile sowing method: The sterile sowing method is to first wash mature seed pods that have not yet split, then soak them in 75-90% ethanol or chloroform for 2-3 seconds, and then soak them in a 5-10% bleach solution or 3% hydrogen peroxide for 5-20 minutes. Take out the seeds and soak them in the same disinfectant solution for 5-20 minutes, then remove the solution by filtering, take out the seeds, and use a fine needle to evenly spread the seeds 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, and a temperature maintained at 20-26°C. After 9-10 months, when the seedlings grow 2-3 leaves, they can be taken out of the bottle and planted in pots.
3. Flower stalk bud induction method: The flower stalk bud induction method is to first cut off the part of the flower stalk that has already finished blooming, then use a blade or sharp knife to carefully remove the bracts between the first to third nodes on the upper part of the flower stalk, exposing the buds in the internodes. Use a cotton swab to evenly apply bud induction agents or hormones such as indolebutyric acid to the exposed internode nodes. After treatment, place the orchid plant in semi-shade with the temperature maintained at 25-28°C. After 2-3 weeks, the buds can be seen growing leaves, and after 3 months they grow into small Phalaenopsis seedlings with 3-4 leaves and aerial roots. Cut off the small seedlings and pot them to become a new orchid plant.
4. Crown-cutting bud induction method: After the growing point of an orchid plant is damaged due to some factors, 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.
5. Stem-cutting propagation method: The principle of the stem-cutting propagation method is to destroy the stem tip growing point to induce the growth of dormant buds. Although there are 1-3 dormant buds in the leaf axils of a Phalaenopsis plant, most cannot sprout into plants. You can wait until the plant grows continuously upward and the stem nodes become longer, then cut off the upper part of the plant with roots using a sterilized sharp blade or scissors, plant it in a new pot to continue growing, and give the lower part with the rhizome proper water management. Before long, new buds will sprout.
6. Tissue culture method: Using the tissue culture method to propagate Phalaenopsis can obtain excellent genetic characteristics exactly the same as the mother plant. The Phalaenopsis seedlings produced by this method are called meristem seedlings or tissue-cultured seedlings. The plant tissue used for meristem culture (explant) can be the terminal bud (stem tip), stem segment (dormant bud), or young leaves or root tips, but currently the most common is the flower stalk of Phalaenopsis.