Phalaenopsis Orchid (Moth Orchid)

Phalaenopsis spp.

Updated Jul 26, 2026

Phalaenopsis Orchid (Moth Orchid) is a graceful orchid with long-lasting flowers and broad leathery leaves, growing best in bright indirect light and a very airy, well-draining orchid mix.

About Phalaenopsis Orchid

Phalaenopsis Orchid is a graceful indoor orchid grown for its long-lasting flowers and broad, leathery leaves. It stays compact, fits easily on windowsills and tables, and can keep its blooms for weeks or even months.

The flowers open along arching spikes and are the plant’s main feature. Their rounded shape and wide petals give them the familiar “moth orchid” look, while the range of colors and patterns makes the plant decorative even in a simple pot.

Phalaenopsis Orchid performs best when treated like an epiphytic orchid rather than an ordinary houseplant. It needs bright indirect light, warm stable conditions, and a coarse orchid mix that keeps air around the roots.

How to Care for Phalaenopsis Orchid

Watering

Water moderately and carefully. Let the top of the orchid mix dry slightly, and check the roots: silvery roots usually mean it is time to water, while green roots usually mean they are still moist.

When watering Phalaenopsis Orchid, soak the bark thoroughly until water runs from the drainage holes, then let the pot drain fully. Never leave the pot standing in water, and avoid getting water into the crown, because trapped moisture there can lead to rot. In warm bright conditions, watering may be needed about once a week, while in cooler lower-light periods the interval should be longer.

Sunlight

Provide bright, indirect light or gentle morning sun. An east-facing window is often ideal, and a bright south- or west-facing window can also work if the light is softened with a sheer curtain.

Phalaenopsis Orchid usually shows its light level in the leaves. Very dark green leaves often suggest too little light, while yellowed or hardened patches can point to too much direct sun. Harsh midday sun through glass should be avoided.

Temperature

Keep the plant in a warm, stable range around 64–77°F (18–25°C). Slightly cooler nights are usually tolerated, and a mild day-to-night difference can sometimes help encourage blooming.

Phalaenopsis Orchid should be kept away from frost, cold drafts, frequently opened doors, and direct blasts from heaters or air conditioners. Sudden temperature changes can cause buds to shrivel and drop before opening.

Humidity

Aim for moderate humidity, ideally around 40–60%, with gentle air movement. Phalaenopsis Orchid appreciates air that is not too dry, especially during the heating season.

Grouping plants, using a pebble tray below the pot, or placing a small humidifier nearby can help. At the same time, Phalaenopsis Orchid should not be kept in stagnant damp air, because airflow is important for healthy roots and leaves.

Soil

Use a very well-draining orchid mix, never regular potting soil. A medium bark mix, sometimes blended with sphagnum, perlite, or charcoal, works well because it lets water move through quickly and keeps the roots airy.

For Phalaenopsis Orchid, the pot should have generous drainage holes and the mix should stay coarse and loose rather than compact. Repot every 1–2 years, or sooner if the bark begins to break down and stay wet for too long.