Moth orchid
Phalaenopsis amabilis · Orchidaceae
📷 JLPC · CC BY-SA 3.0
The gardener's calendar
Moth orchid is in full bloom: enjoy it, watch watering in hot weather and let spent flowers feed pollinators before pruning.
ID card
- Foliage
- Evergreen, dark green and fleshy
- Flowering
- Fall to spring, white, pink or variegated flowers
- Adult size
- 30 to 60 cm in height
- Growth
- Slow to moderate
- Hardiness
- Very tender (min. 15 °C)
- Origin
- Southeast Asia (Philippines, Indonesia)
- Type of cultivation
- Epiphyte, grown in a pot with aerated substrate
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
The secret to Phalaenopsis: water with lukewarm water (never cold) once a week, always in the morning, letting the water drain freely. Humid air matters more than generous watering: place the pot on a tray with wet clay pellets.
The common mistake
Drowning the plant 'to do it right': water stagnation at the roots kills Phalaenopsis within weeks, long before you see obvious symptoms.
The pro's trick
Spot the living roots (green or light grey) from dead roots (brown, mushy): if you have more than 30% viable roots, the plant will rebloom. A proper repotting (fine bark, airy) beats meticulous watering.
Seasonal watch
Winter: if temperature drops below 15°C at night, flowering aborts or the plant goes dormant; keep it above 18°C and halve the watering during this period (it consumes little).
Care
Watering
Water moderately once or twice a week, allowing the substrate to dry out partially between waterings. Water must drain freely and not pool at the heart of the plant. In winter, reduce the frequency of watering. Prefer soft or filtered water at room temperature.
Light and exposure
Place your moth orchid in bright but indirect light, away from scorching direct rays. A window facing east or west is ideal. If the foliage turns yellow or leaves grow excessively long, adjust the lighting. Avoid direct midday sun exposure in summer.
Pruning and flowering
Don't prune healthy leaves. After flowering, you can cut the flower spike just above a node to encourage secondary flowers. Remove spent flowers and dead stems to stimulate the plant.
Fertilizing
Fertilize every 15 days during the growing season (spring and summer) with diluted balanced fertilizer. In fall and winter, space out applications or stop fertilizing. Use a specialized orchid fertilizer if possible.
Substrate and repotting
Grow in a perforated pot with an aerated substrate made of pine bark, charcoal and sphagnum. Repot every 2 to 3 years after flowering. Make sure the substrate doesn't retain excessive moisture to prevent root rot.
Pests and diseases
Watch for mealybugs and spider mites, especially in dry air. Brown spots or root rot indicate excessive humidity or improper watering. Check the condition of leaves and roots regularly and isolate the plant if problems arise.
Did you know?
The moth orchid fascinated European botanists in the 19th century upon its discovery in Southeast Asia. Its name "Phalaenopsis" literally means "resembling a night moth" in Greek, as its graceful and delicate flowers remind one of an insect in flight. It has become one of the most popular orchids in the world for the home, thanks to its generous and prolonged flowering.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
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Tips generated and checked by Viridia — adapt them to your local climate.