June,
Typically all our hybrid garden cannas should bloom in your growing area by mid to late summer if basic growing conditions are met. Planting date and sun requirements may be a factor.
Do you know the name of the cultivars you planted? Keep in mind that not all our hybrid cannas produce viable seed and the seedlings will not likely be a clone of its parent. By storing and dividing your plants you should be able to rapidly expand your garden.
Kent

last year I bought a couple of Bird of Paradise, they too never bloomed nor got taller than 3 feet!
...they grew very wide very fast but never bloomed :(