marki3rd wrote:
Sorry Carolyn, I have absolutely no idea what this variety's name is. There is a big clump of these and some red ones in our back yard that were there when we moved in here 8 years ago. We mow them all down to the ground every fall and they grow back up every spring. Not sure that would be recommended procedure by anyone into horticulture, but they seem to be able to withstand it.
They naturally die down in the fall, but you should wait till they brown to cut them down. The leaves provide energy to the roots and strengthen the plant for spring growth. Like daffodils, it is not recommended to cut the foliage till it wilts down.