I have a Bergenia plant which grows every year but doesn't get bigger nor does it bloom. The lower leaves will turn a redish/brown/yellow colour but the plant doesn't die. I am in Southern Ontario. How do I get the plant to bloom?
Hopefully this article helps: https://www.gardeningknowhow.com/ornamental/flowers/bergenia/bergenia-growing-information.htm
When should I fertilize Bergenias?
These should be fertilized in early spring. Here is an article for more information on the plant: https://www.gardeningknowhow.com/ornamental/flowers/bergenia/bergenia-growing-information.htm
What can I substitute for Berginia in my zone 9b garden?
There are many things to choose from in your zone! This article will get you started with several choices: https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-9-10-11/zone-9-perennial-plants.htm
There is a bed edging and they are well over it - this is O.K. but they are TOO well over it and halfway across the foot paths.
You should only cut small amounts of the plant at a time off. They need every bit of growth they can muster to survive during the cool season. Trimming should be done regularly and only consist of removing dead or dying growth.
This article will give you more information: https://www.gardeningknowhow.com/ornamental/flowers/bergenia/bergenia-growing-information.htm
Is there anything I can do to ensure that they flower next year?
These articles on bergenia plant care should help. Make sure you are leaving the foliage on through winter, and in the spring, only cut out dead leaves. It is a perennial, so if your plant was a first-year plant, it may not bloom till the third year. Also, be sure they have some sun during the winter and that the soil is not too rich.
https://www.gardeningknowhow.com/ornamental/flowers/bergenia/bergenia-growing-information.htm
https://www.gardeningknowhow.com/ornamental/flowers/bergenia/bergenia-pests-and-disease.htm