Outdoor Fern

Question

I have my mother’s fern in the yard that is about 40 years old. It grows about 4 to 5 feet and is spectacular. The last 2 years it isn’t growing as big and starts to brown early. It used to last until July/August…now it starts to wilt in June. It is huge, and I guess I need to divide it, but I am uncertain how to do it. Please help save it.

Answer 1

This will help;
https://www.gardeningknowhow.com/houseplants/boston-fern/boston-fern-runners.htm