We're not sure what plant this is or how to care for it/save it. In ten years it has grown from maybe 10 inches high to over six feet. This spring the fronds/leaves started to turn brown and droop until eventually they were all dead looking. We were figuring the plant was probably a lost cause, but we just noticed these green shoots growing up from the base of the trunks. Should we cut off all the dead fronds? Cut down all the big trunks to make room for the new growth? Or just leave it be? More back story - back in the fall the yard service cut a bunch of the lower growth fronds - as if you were limbing a tree. Before that the fronds were a lot thicker around the bottom. At the time it didn't seem to affect the plant and over the winter it seemed to be fine during the freezes; we didn't notice any negative effects until it got warmer in the spring. We'd appreciate any insight. Thanks!