How often should I water it?

Water frequently during the growing season, allowing roots to dry slightly between sessions.

Does it need direct sun?

It prefers bright, filtered light rather than harsh direct sun.

Plant guide

Blue vanda.

Vanda coerulea

Pronounced VAN-duh see-roo-LEE-uh

Also known as Blue Orchid, Blue vanda

The blue vanda is a stunning orchid known for its striking, sky blue flowers. It grows as an epiphyte, meaning it naturally clings to trees in its native habitat. You will love how its unique, airy root system adds a tropical feel to your home.

Another photo of Blue vanda — Photo by Jigu (CC BY) via iNaturalist

At a glance

Care level: Difficult
Plant type: Epiphytic orchid
Light: Bright filtered light
Indoor light: Bright indirect
Water: Every 1 to 2 days
Mature size: 3 feet
Growth rate: Slow
Hardiness: USDA 10 to 12
Bloom time: Late summer to winter

Care

Keep this orchid in a basket with minimal media to allow its roots to breathe. Watch for shriveled leaves which signal dehydration, or yellowing which often points to root rot from too much moisture. High humidity is essential for keeping this plant happy.

Watering: Mist or soak the roots daily during warmer months to maintain moisture.
Feeding: Use a balanced orchid fertilizer diluted to half strength.
Pruning: Trim off dead or dried flower spikes once the blooms have faded.
Repotting: Only repot when the basket begins to degrade or the roots become unmanageable.
Soil: Orchid bark or bare root
Soil pH: 5.5 to 6.5
Temperature: 10 to 30°C
Humidity: 60 to 90%
Drought tolerance: Low
Lifespan: Perennial, can live for many decades with proper care.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing excessively out of the basket
Degraded potting media
Plant becoming unstable

Safety

People: The plant is generally considered non-toxic, but ingestion is not recommended.
Pets: This plant is generally considered non-toxic to cats and dogs.
Children: Keep out of reach of small children to prevent accidental ingestion of plant parts.
Edibility: This plant is not intended for consumption and may cause digestive upset.

How to identify it

Stunning sky blue petals
Checkered pattern on flowers
Long, strap like leaves
Exposed, thick aerial roots

Height: 0.3 to 1m
Spread: 0.2 to 0.5m
Leaves: green, evergreen
Flowers: blue, violet, 8 to 12cm

Problems to watch for

Root RotCommon
Scale InsectsCommon
MealybugsUncommon
Spider MitesUncommon

By symptom

Plant problems by symptom

Check your blue vanda from a photo

Pocket Botanist looks at a photo of your plant and tells you what's wrong and what to try first.

Growing it

Propagation: cuttings, seed
When to plant: spring
Overwintering: Move to a warm, bright indoor location if temperatures drop below 10 degrees Celsius. Reduce watering slightly during the cooler winter months.
In containers: It is best grown in open wooden baskets or mounted on bark to allow for excellent root aeration.

Stem cuttings

Select a healthy stem with existing aerial roots.
Cut the stem using a sterilized blade.
Place the cutting in a basket with minimal media.
Mist regularly to encourage root development.

Group orchids together to create a microclimate that helps maintain higher humidity levels.

Grows well with

Phalaenopsis · They share similar light and humidity requirements.
Dendrobium · These orchids thrive in similar hanging basket conditions.

Similar species

Vanda tricolor · A related species with spotted flowers and similar growth habits.

Science

Family: Orchidaceae
Genus: Vanda
Order: Asparagales
Class: Liliopsida
Native range: Northeastern India, Myanmar, and Thailand.
Conservation: This species is listed under CITES Appendix I due to over-collection in the wild.

It thrives in high-altitude forests where it clings to tree branches to access light and moisture.

Value to wildlife: nectar source
Pollinators: bees, butterflies
Uses: ornamental, collector plant

Through the year

JFMAMJJASOND

Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 1/9
Soil reaction: 5/9
Light: 7/9
Temperature: 7/9
Moisture: 6/9
Nutrients: 3/9

Taxonomy resolved against GBIF.

Questions people ask

How often should I water it?: Water frequently during the growing season, allowing roots to dry slightly between sessions.
Does it need direct sun?: It prefers bright, filtered light rather than harsh direct sun.

Where the name comes from

The genus name Vanda is derived from the Sanskrit word for the plant, while the specific epithet coerulea refers to its striking blue color.

Good to know

It is often called the Blue Vanda.
It grows as an epiphyte on trees in its native habitat.
The flowers can last for several weeks.

Keep your blue vanda growing

This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

Get the app

This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.