They are called palms in that region but are Cordyline australis from New Zealand where they are called cabbage trees and are everywhere. They do quite well in

They are called palms in that region but are Cordyline australis from New Zealand where they are called cabbage trees and are everywhere. They do quite well in colder New Zealand climate regions. If you are unlucky to live next door to a mature cabbage tree planted along the neighbours fence, you will spend your life picking up fallen leaves, which cannot be put in our green waste bins, on general refuse, because they don't decompose easily (18 months under careful ideal composting conditions, years otherwise). Its not uncommon to find a giant pile of cabbage tree leaves behind someone's house because they have been meaning for years to take them to the rubbish dump. Every so often someone asks on reddit what they should do with their pile. Another interesting face is they can live to 400+ years although often they can rot internally after 100.