Why Your Phalaenopsis Orchids Have Droopy, Leathery Leaves

Diagnosing Droopy, Leathery Leaves on Phalaenopsis Orchids

You have four phalaenopsis orchids—one in a 6-inch pot and three in 4-inch pots, all potted in bark. One plant looks great, but the other three show crinkled leaves, and one has a yellowing bottom leaf. The visible roots appear healthy, but you’re watering twice a week (fertilizing on Saturdays, water only on Wednesdays) and the bark feels dry at watering time. Humidity is 50–60%, with day/night temperatures of 80°F/65°F.

Likely Cause: Root Rot from Overwatering

Even though the bark surface looks dry, the interior of the pot may stay wet. Phalaenopsis roots need moisture but must not remain constantly saturated. Watering twice a week is often too frequent, especially in bark that retains moisture internally.

How to Check Moisture Properly

• Lift the pot: A heavy pot means moisture remains; a light pot indicates it’s time to water.
• Wait a few extra days if the pot feels nearly as heavy as right after watering.
• Ensure air movement around the plants—gentle airflow helps bark dry evenly.

Recommended Action

1. Unpot the affected plants and inspect all roots, including those deep in the bark.
2. Trim away any mushy, brown, or hollow roots.
3. Repot into the smallest container that accommodates the root system—larger pots stay wet longer.
4. Use fresh, well-draining orchid bark mix.
5. Adjust watering: let the pot become light before watering again.

Your growing environment (humidity, temperature) is otherwise excellent. Keep up the good work with your Paphiopedilum!