By Shazziepx
Surrey,
United Kingdom 
Hello I have an Elephant ears plant, might be Alocasia Odora. It comes in, in the winter and usually grows well. It has one yellow leaf, the other 2 are fine. Well drained, watered, good environment so any ideas re the yellowing would be welcomed.
17 Nov, 2014
Answers
I agree,it's probably an old leaf,so I would just take it off,and see how the rest of the plant progresses..
17 Nov, 2014
Thanks for your comments I will give chlorophyll a go.
17 Nov, 2014
Perhaps it is just an old leaf. the removal of the chlorophyll, green pigment is common. You could give it a 'dose of Epsom salts' as that contains magnesium which is essential for chlorophyll production.
17 Nov, 2014