My Dad has had these Century Plants for about the last 20 yrs. He planted the 2 of them beside his bird bath in the back yard; made a "sweet" little rock garden. Well...in the past few years, these things have gotten huge. Nothing else in the bed, & the birdbath has disappeared between them. You can't get it out, because they have extremely long, sharp! tips on them. Then, in the past couple of months, they started "changing". A stem began to grow out of the center of each of them. Okay, they're gonna bloom. Then, it grew...and it grew....and it GREW!!! Now, the "stems"----actually very hard, solid stalks---are at least 20 feet tall. They've got little branches on them, where they will bloom. Dad's been making pictures. Well, I finally got my pictures of them....I think they're unbelievable!!! Daddy calls them his Twin Towers!!! What do you think??