Looking for recommendations to plant a tropical plants?

[edwardschlacter11]

I would like to plant a tropical plant in front of the house which will not grow more than 4 feet high and 3 feet wide for hardiness zone 6.
What can you recommend?

 

[Rosenkäfer]

Difficult in zone 6. Tropicals begin at zone 9 and up, I would assume. Ever thought of planting tropicals in large containers and putting them indoors in the fall?