Encourage Humidity: Elephant ears thrive in humid environments. Increasing humidity around the plant by misting it regularly or using a humidifier can encourage the leaf to unfurl.
Check for Blockages: Gently inspect the base of the leaf where it emerges from the stem. Sometimes the leaf can be stuck to itself or obstructed by debris. Carefully separate any stuck sections or remove the obstruction.
Provide Adequate Light: Elephant ears need bright, indirect light. Move the plant to a location where it can receive sufficient light but is protected from harsh, direct sun.
Adjust Watering: Make sure the plant is getting the right amount of water. Overwatering can cause the leaves to turn yellow and wilted, while underwatering can prevent new growth from emerging. Water when the top inch of soil feels dry.
Check for Pests and Diseases: Examine the plant for pests, like aphids or spider mites, and treat them if necessary. Additionally, check for fungal diseases that can cause leaves to deform. Isolate the affected plant and treat it promptly.
Allow Patience: Elephant ear leaves can take time to unfurl fully. Sometimes it can take several weeks for a new leaf to reach its full size. Avoid stressing the plant by moving it around or repotting it frequently.
If the leaf fails to unfold after trying the above suggestions, it might be due to an underlying health issue or a natural occurrence where not all leaves fully develop. Keep providing proper care to the plant, and it should produce healthy new growth in time.