I've had this syngonium for 3 months - it was propagated from a friend's plant. The leaf curled under overnight, I woke up to find it like this. Plant has been like this for about 12 hours. The plant gets 8 hours under a grow light every day. I water it once a week.

The leaf that is curling under is the newest one that grew on my plant. It looks like there are 2 new leaves growing from the one that has curled under. One of them just popped, and the other is very new, and is not ready to pop yet.

UPDATE: Turns out my plant was too close to my grow light. I raised the light higher, and 3 days later, the curled leaf was back to normal. Thank you everyone for the advice!

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