Hello dear @eunoia101, good to know that you have obtained experiences with this type of plants for feeding rabbits, I imagine that in your area the climatic conditions are suitable for the adaptation of the plant.
You made something very clear, which I share with you, that despite being sustainable and good alternatives, the supply cannot be exceeded, because it can cause some alterations in the animal's metabolism-
So long, have a great week, thanks for your valuable comment.