Q.The leaves on my indoor geranium are curling under. Otherwise the plant looks healthy. No spots on leaves or yellowing. I water it about
once a week. It’s kept in a sunny window and receives at least 6-8 hours of sun daily. Help!
Not sure, but one guess is it may be from cooler temperatures than the plant would like? I did a quick search for leaf curl or wilt, but your plant's leaves don't look like verticllium wilt or drought. Although Geraniums are not related,I know Rhododendron leaves curl dramatically in cold temperatures. from your photo it looks like just lower leaves are affected. the leaf looks otherwise healthy. Sorry I couldn't be more helpful, but overall, I don't think it's a matter of concern. Will be curious to see how your plant progresses.