Vanda Orchid Care

Vanda orchids are some of the most beautiful orchids you can grow, but they're also among the most demanding. They produce large, colourful flowers that can last for weeks, but they need much more light, humidity, and warmth than most houseplants.

Vandas come from tropical parts of Asia where it is warm, humid, and bright year-round. Calgary is almost the opposite. Because of this, Vandas usually struggle if they're simply hung in a window like many people do with Phalaenopsis orchids.

A healthy Vanda needs four main things: strong light, warmth, humidity, and airflow.

Vandas need much brighter light than most common houseplants. In Calgary, a sunny window may help in summer, but winter usually requires a grow light if you want reliable growth and flowers.

Vandas prefer comfortable tropical temperatures. Keep them warm during the day and avoid cold drafts at night. They should never be near a freezing window or an exterior door in winter.

Humidity is where Calgary growers often lose the battle. Vandas like humid air, especially around their roots. A dry room can cause roots to shrivel even if you water often.

Airflow is just as important. Humid, stagnant air can cause rot. The goal is not “wet and still.” The goal is humid, bright, warm, and breezy.

Vandas like to be watered thoroughly, then allowed to dry. Think of it like a tropical rainstorm: soaked, then breezy and drying. When watering, drench the roots well. Let the water run through. Then allow the roots to dry before watering again.

During active growth, a Vanda in a basket may need water several times per week. A bare-root plant may need water daily. In winter, watering usually slows down, especially if the plant is not growing as quickly.

Calgary tap water can be hard, so mineral buildup can become a problem over time. If the roots develop crusty deposits or blackened tips, flush the plant well with clean water and reduce fertilizer strength.

Should You Grow Vandas Bare-Root?

Bare-root Vandas look amazing. They make sense in tropical climates where the air is naturally humid. In Calgary, bare-root growing is possible, but it is high-maintenance. You may need to soak or spray the roots every day during active growth, especially under lights or in dry winter air.

For the average home grower, a basket or ventilated pot with hydroton is a better compromise. It still gives the roots air, but it holds just enough moisture to make the plant easier to manage.

Do not EVER pack Vandas into dense potting soil. Their roots need oxygen. Heavy, soggy media is one of the fastest ways to rot them.

Good Vandas for Calgary Growers

If you are new to Vandas, do not start with the biggest, most dramatic one you can find.

Look for smaller or more forgiving types, such as compact Vanda hybrids, Vanda falcata, Vanda coerulea hybrids, or older Ascocenda-type hybrids.

These are usually more manageable indoors and better suited to grow lights and smaller spaces.

Large strap-leaved Vandas can be beautiful, but they need serious light, space, warmth, and humidity. They are better for dedicated growers with a greenhouse, tent, or orchid room.

Common Problems

If your Vanda has dark green leaves but will not bloom, it probably needs more light. In fact, it probably just needs more light in general. 

If the leaves are wrinkled, check the roots. The plant may be drying out too much, or the roots may already be damaged and unable to take up water.

If the roots are black, mushy, or smell bad, the plant may be staying too wet without enough air.

If the leaves look dusty, speckled, or webbed, check for spider mites. Calgary’s dry indoor air makes spider mites more likely, especially in winter. If you see white cottony spots or brown bumps, check for mealybugs or scale.

The Simple Version

Vandas can grow in Calgary, but they need help.

Do not treat them like ordinary houseplants. Give them strong light, warmth, humidity, airflow, and very airy roots.

The easiest Calgary method is not a bare-root Vanda hanging in a dry living room. It is a Vanda in a basket with LECA, under good light, with a humidifier nearby and a fan moving air gently around the plant. They are still demanding, but they are not impossible. They just need a little piece of the tropics built for them indoors.