Hostas–when Is Best Time To Separate/transplant?

Question

My hostas are quite old and very large. Can they do well as a roadside barrier plant?

Answer 1

Many people do divide and transplant hosta but it isn't necessary. Since you want to propagate them, here is how:

https://www.gardeningknowhow.com/ornamental/foliage/hosta/dividing-hosta-plants.htm

I'm not sure they are tough enough to be a roadside barrier. You may end up with a lot of tattered leaves.