Caladium are NOT hardy in our climate. They are most often sold in leaf here as a houseplant. For seasonal use outdoors, they are best grown as a container plant and started indoors early in spring - our summers are just too cool to promote much growth unless they get a good head start. Same with cannas (although winter hardy, in-ground cannas don't usually emerge and develope good foliage in the NW until well into summer. Sometimes won't even bloom unless a very hot summer).