Hello everyone! I am new to the forum and I hope you can help. After returning from vacation (I was away for a month), I found my Canna Indica in poor condition, with dry leaf edges, even though my roommates, following my advice, watered the plant every evening. I bought the canna about two months ago and transplanted it into a larger pot with universal soil and some expanded clay. The plant is on a balcony in Malta (so it's very hot) and gets sun almost all afternoon. What am I doing wrong? Thank you very much.