Pocket Botanist
Check these first
- Feel the top inch of the soil to check for dryness.
- Check the humidity levels in the room.
- Look for signs of heat stress from nearby vents or heaters.
Likely causes
Low Humidity
PossibleHow to tell: The leaf edges start to curl inward or crisp up, making the plant look shriveled. Rex Begonias love high humidity and struggle in dry indoor air.
What to do: Group your plant with others to create a microclimate or place it on a tray filled with pebbles and water. You can also run a humidifier nearby to keep the air moist.
Inconsistent Watering
PossibleHow to tell: The leaves curl and feel limp because the roots are not getting enough moisture. The soil will feel dry and pull away from the sides of the pot.
What to do: Stick to a regular schedule where you water when the top inch of soil feels dry. Ensure you soak the soil thoroughly until water runs out of the drainage holes.
Find out what's wrong with your rex begonia
The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
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When to worry
Curling is a sign that the plant is struggling to maintain its water balance. If the leaves turn brown and brittle after curling, the damage is likely permanent.
Stopping it coming back
Keep the plant away from cold drafts or hot air vents. Maintain a steady watering rhythm to keep the soil consistently moist but never soggy.
Keep your rex begonia healthy from here
Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.
Questions people ask
- Will the leaves uncurl once I water?
- If the curling is due to mild dehydration, the leaves may perk up after a good watering. If they are severely dried out, they will likely remain curled.
- Is misting the leaves helpful?
- Misting provides only temporary relief and can encourage fungal issues on Rex Begonias. A humidifier or pebble tray is a much better long-term solution.
More problems with Rex Begonia
- Why are my Rex Begonia leaves getting brown tips?
- Why is my Rex Begonia showing signs of root rot?
- What are these spots on my Rex Begonia leaves?
- Why are my Rex Begonia leaves turning yellow?
- Why is my Rex Begonia drooping?
- Why is my Rex Begonia dropping leaves?
- Why are there bugs on my Rex Begonia?
- Why is my Rex Begonia growing so tall and thin?
This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.