We moved into our new home last and year and last spring an entire
area of Calla Lillys errupted near a fence. The area is about 3 feet
wide and at least 15 feet long. Full of Lillys, we wanted to use the
space for something else so I cut them off, but I guess that didn't
work because they all came back again and keep growing.

Any ideas on how to get rid of them? Round-up?

Thanks!