Hello. I'm new here and new to plants.
I have 2 Pretoria Canna's with the orange flowers. They bloomed once this year and since then, everytime the new leave would spread out, they would start browning at the edges until the entire leaf was dead. We haven't had any blooms since then. Do these plants have a blooming process? Are they sick? Coming up on winter, do I need to trim them? I guess I'm looking on any resources for care and maintenance on these plants. They are so beautiful, I don't want them to die. Thank you for any help