I'm assuming this is an agave, but perhaps I'm way off track. I don't know it the leaf end is natural or the result of trimming... Please help id.
Possibly Dasylirion sp . This exhibits the white frayed tips. PlantFiles Pictures: Arborescent Dasylirion (Dasylirion miquihuanense) by palmbob http://3.bp.blogspot.com/-JCVYEPNAv...U/CkLHGg5mamI/s1600/Dasylirion+wheeleri+5.JPG
Thank you. Dasylirion serratifolium looks like a close candidate and appears to be common in the hort trade. This plant is striking at a distance and closeup -I like that. http://www.tropiart.pl/uploads/photo/page/6cf70fdecb08be2cfa144c2373307d5cc9abd298.JPG