Perennial - Gunnera often called Giant Rhubarb and sometimes called The Dinosaur Plant, it is a native of the tropical forests of Costa Rica, Columbia and Brazil. The plant itself can grow to be ten feet high and just as wide, with single leaves reaching 4 to 6 feet across!
ptilotus exaltatus 'joey'. Australian native, but worth breaking the rules for :)
Leopard Plant (Narrow-Leaf Ligularia) Ideal growing conditions: full sun to dappled shade Mature size: 5 feet tall and 3 feet wide Pictured: The Rocket http://www.hgtv.com/gardening/striking-blog-plants/pictures/index.html?i=1#
This will help to keep the kitties away from the plants. Wire Cloche by Colonial Tin Works | Gardener's Supply