Common Problems in Phalaenopsis Orchids and How to Fix Them

Phalaenopsis orchids, also known as moth orchids, are prized for their elegant blooms and easy care. However, even these resilient orchids can encounter problems that may affect their health and beauty. Understanding common issues and how to address them can help you maintain thriving plants.

1. Yellowing Leaves

Cause: Overwatering, underwatering, or excessive direct sunlight.

Solution: If overwatering is the issue, allow the potting medium to dry slightly before the next watering. If underwatering is the problem, increase watering frequency, ensuring the roots receive adequate moisture. Move the orchid to a spot with bright, indirect light to avoid sun damage.

2. Wrinkled or Shriveled Leaves

Cause: Dehydration due to infrequent watering, damaged roots, or low humidity.

Solution: Check the roots—if they appear dry and brittle, increase watering gradually. If the roots are mushy or rotten, trim the affected parts and repot the orchid in fresh bark mix. Consider placing a humidity tray beneath the plant to provide consistent moisture.

3. Root Rot

Cause: Poor drainage, excessive watering, or using the wrong potting medium.

Solution: Remove the orchid from its pot, trim any blackened or mushy roots, and repot it in a well-draining orchid mix. Ensure the pot has proper drainage holes and water only when the potting medium is dry to the touch.

4. Bud Blast (Falling or Withering Buds Before Blooming)

Cause: Sudden environmental changes, low humidity, or exposure to cold drafts.

Solution: Keep the orchid in a stable environment with temperatures between 65–75°F (18–24°C). Avoid placing it near heaters, air vents, or cold windows. Increase humidity levels with a tray of water and pebbles or by misting the air around the plant.

5. Pests (Aphids, Mealybugs, Spider Mites)

Cause: Infestations caused by other houseplants or poor air circulation.

Solution: Inspect the orchid regularly for pests, especially under leaves and along stems. Wipe affected areas with a cotton swab dipped in rubbing alcohol or apply neem oil as a natural remedy. If the pest problem continues despite initial treatments, consider applying insecticidal soap as a targeted solution.

6. Lack of Blooms

Cause: Insufficient light, improper feeding, or lack of a temperature drop at night.

Solution: Ensure the orchid receives bright, indirect light for at least 10–12 hours daily. Use a balanced orchid fertilizer every two weeks during the growing season and reduce feeding in winter. To encourage blooming, expose the orchid to slightly cooler nighttime temperatures (about 10°F lower than daytime).

Final Thoughts

Phalaenopsis orchids are relatively easy to care for, but occasional problems can arise. By recognizing and addressing these issues early, you can help your orchid stay healthy and continue to bloom beautifully. With proper care, patience, and a little troubleshooting, your moth orchid will reward you with stunning flowers season after season. 🌸