Vanda orchids are famous for their bold colours, dramatic blooms, and striking aerial roots. Unlike many houseplant orchids, they often grow without potting media, with roots freely hanging in baskets or vases.
While they have a reputation for being a little more demanding than beginner orchids such as Phalaenopsis, Vandas reward good care with spectacular, long-lasting flowers in shades of blue, purple, pink, orange, and white.
Here are the essentials to help your Vanda orchid thrive.
Light
Vanda orchids love bright light and need much more of it than many other orchid varieties.
In nature, they grow high in trees in tropical regions, where they receive strong filtered sunlight throughout the day. When grown indoors, placing them in the brightest spot available will help encourage strong growth and flowering.
A position near a south or east-facing window with filtered light is often ideal. If the light is too weak, your orchid may produce lush leaves but refuse to bloom.
That said, intense midday sun can still scorch leaves, so some protection, like sheer curtains, is helpful during peak summer sun.
Signs your Vanda needs more light:
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Dark green leaves
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Slow growth
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Few or no flowers
Signs of too much light:
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Yellowing or burnt leaves
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Dry patches on foliage
Watering
Vanda orchids require frequent watering because their roots are usually exposed rather than surrounded by potting mix.
A common method is to soak the roots in water for around 10-20 minutes, allowing them to fully hydrate before draining. In warm weather, this may be needed daily or every few days, while during cooler seasons, they require less frequent watering.
Healthy orchid roots will appear green when hydrated and silvery when dry, which can help you decide when to water again.
Because orchid roots need oxygen as well as moisture, it's important to let them dry between waterings and avoid leaving the plant sitting in water.
Tip: Water early in the day so roots dry before evening, helping prevent rot or fungal problems.
Humidity
Like most tropical orchids, Vandas prefer high humidity levels, ideally around 50-80%.
Dry indoor air can cause shrivelling roots or leaf dehydration, so many growers increase humidity by:
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Using a humidity tray
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Grouping plants together
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Running a small humidifier
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Growing Vandas in glass vases or hanging baskets that trap moisture around the roots
Good airflow is just as important as humidity, as stagnant air can lead to fungal or bacterial issues.
Temperature
Vandas thrive in warm environments similar to their tropical origins.
Ideal conditions include:
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Daytime: 18-30°C (65-86°F)
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Night: Slightly cooler temperatures
Consistently warm temperatures encourage active growth and help the plant develop strong roots and flower spikes.
Avoid placing your orchid near cold drafts, radiators, or sudden temperature fluctuations.
Feeding
Because Vandas are often grown bare-root, nutrients wash away quickly when watering. Regular feeding helps maintain healthy growth.
A common approach is to use a balanced orchid fertiliser diluted to half strength, applied weekly during active growth. Many orchid growers follow the rule “weakly, weekly.”
Flushing the roots with plain water occasionally helps prevent fertilizer salts from building up.
Mounting and Growing Methods
Vandas are unique because they are commonly grown:
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In hanging baskets
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In wooden slatted containers
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In glass vases
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Mounted with bare roots
These setups allow excellent airflow around the roots, which orchids need to stay healthy. Orchids naturally grow attached to trees rather than in soil, so well-draining setups that allow airflow are essential.
When Will a Vanda Orchid Bloom?
With proper care, Vanda orchids may bloom once or even several times a year. Their flowers are known for:
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Large, vibrant colours
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Long-lasting blooms
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Fragrant varieties in some hybrids
Strong light, warm temperatures, and consistent watering are the key factors that trigger blooming.
Final Thoughts
Vanda orchids may seem intimidating at first, but once you understand their love of bright light, frequent watering, and warm humidity, they become incredibly rewarding plants to grow.
With the right care, these tropical beauties can produce some of the most vibrant orchid blooms you’ll ever see.
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