My Cavendish banana is about 10 ft. tall and was planted this spring. Leaves are dark green except for the newest one, and it has four pups 1-2 ft. tall. I fed it 1/2 pound balanced fertilizer (10-10-10) earlier this week--first time I have fertilized.
Yesterday, I noticed that the cigar leaf is drooping--just curved over with the tip lower than where it sprouts from the center. It is very pale green. There is one other dark green leaf near the top that is curling up on one side, with the edges curled toward the midrib. The other leaves look fine . . . any ideas about what could be causing this? Sorry I can't upload a picture--the site never lets me

Thank you in advance to anyone who can help me diagnose this!