Vanda orchid is one of the most grown orchids as house-plant in the world and also is one of the five most used orchids in horticulture, this mainly because of its beautiful and spectacular flowers and also for the ease of growing it in artificial conditions. Even so, you must know what the needs of a Vanda orchid are so it can grow properly. Light, water, humidity, air movement and fertilizer are the most important factors in correct Vanda orchid care.
Vanda orchid comes from equatorial regions; therefore it is used to hot temperatures over 64°F (18°C) in daytime and about 10°F less at nighttime. If you can provide it this temperature all the time then it will be in active growth during the entire year. A Vanda orchid will handle short extreme temperature changes as long as they remain short.
Vanda orchid will need copious sunlight as well, but in the same time has to be protected from intense midday sun. The plant should enjoy full sunlight in the morning and afternoon, staying in a more shaded location during midday. Yellow leaves are a sign of overexposure to light while dark green leaves are the result of insufficient sunlight. The leaves should be light green.
Also, in its natural conditions, the Vanda orchid is used to powerful air movement, so you will have to provide this as well. Of course I don’t think the wind blows thru your houses so you will need to improvise using a fan. If there are moments when the temperature goes under the recommended limit, then stop providing air movement until the temperatures goes back to normal values.
Vanda is one of the orchid species that likes a very high level of humidity, somewhere near 80%. On the other hand Vanda is sensitive to over-watering so it is a tricky balance. Don’t water the plant in the afternoon, don’t water it for 2-3 weeks after it blooms, and don’t water it until the potting medium completely dries.
Vanda plants are heavy feeders, so you will have to feed the plant on a weekly basis during its growth season. Also it must be flushed thoroughly with plain water every week to remove built-up salts. It is recommended to use a Potassium Fertilizer for one month between September and October. This will help the roots to strengthen. From November to June feed the orchid once a month, that is kind of different from other orchid types that don’t need feeding at all during winter.
Vanda orchids don’t enjoy being repotted but you will have to do this once every three years. Also chose a pot big enough to sustain another 3 years of growth, especially because Vanda orchid grows more laterally then vertically.
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