Phalaenopsis Orchid Care, Everything You Need to Know to Keep It Blooming

Phalaenopsis, or the Moth Orchid, is the most loved orchid in India — and for good reason. It blooms for months, adapts to indoor conditions, and is strikingly beautiful. But many people unknowingly make simple mistakes that cause their plant to stop blooming or slowly decline.

This guide will walk you through everything — light, water, feeding, repotting, and how to make it bloom again and again.

Light Requirements

Phalaenopsis needs bright but indirect light. An east-facing window is ideal — soft morning sun, no harsh afternoon rays. If leaves turn yellow, it is getting too much light. If leaves turn dark green and no flowers appear, it needs more light. Healthy Phalaenopsis leaves should be a medium, bright green.

Watering — The Most Important Part

Water your Phalaenopsis when the roots turn silvery-grey and the growing medium feels dry. In summer, this usually means watering once every 5–7 days. In winter, extend to 10–12 days. Always water in the morning so excess moisture dries during the day. Pour water slowly over the bark until it drains freely from the bottom. Never let the plant sit in standing water — this rots the roots.

Humidity and Temperature

Phalaenopsis loves humidity between 50–70%. In dry Indian summers or air-conditioned rooms, mist the aerial roots lightly every other day. Keep temperatures between 18°C–30°C. They do not like cold drafts or temperatures below 15°C.

Fertilising

Use a balanced liquid orchid fertiliser (20-20-20 NPK) diluted to half strength. Feed every two weeks during spring and summer. Reduce to once a month in autumn. Stop fertilising in winter. A simple rule: "Water weakly, weekly" during growing season.

When to Repot

Repot every 2 years or when you see roots overflowing out of the pot. Always repot in fresh orchid bark. Trim any dead or rotted roots before repotting. The best time to repot is right after flowering ends.

How to Make It Bloom Again

After the flowers drop, do not throw the plant away! Cut the flower spike just above a node (the little bump on the stem). In 6–8 weeks, a new side shoot will emerge and produce flowers again. To encourage re-blooming, expose the plant to slightly cooler night temperatures (around 16–18°C) for 2–3 weeks in autumn.

Common Problems

• Yellow leaves: Usually overwatering or too much direct sun.
• Wrinkled leaves: The plant is thirsty — water more frequently.
• No flowers for a long time: Needs more light or a cool temperature trigger at night.
• Root rot (mushy, brown roots): Overwatering — reduce watering and repot in fresh bark.