Curling Leaves on begonia
What's Happening
Usually a defensive physiological response to water deficit. Begonias curl their leaves inward to reduce surface area and transpiration when the air is too dry (low humidity) or the soil is too dry (underwatering). It can also indicate root stress from fertilizer salt buildup.
How to Fix It
- 1
Water thoroughly until excess drains from the bottom if the soil is dry.
- 2
Boost ambient humidity to 50-70% using pebble trays, plant grouping, or a humidifier.
- 3
If soil is moist but leaves are curling, flush the pot with plain distilled water to leach out excess mineral salts.
- 4
Check for recent environmental changes (moving, repotting) and allow 14 days for acclimation.
How to Prevent It
Maintain consistent soil moisture levels—avoid the 'bone-dry to soggy' cycle. Use a hygrometer to ensure humidity stays above 50%. Fertilize sparingly at 1/4 strength during the growing season.