Hi Mike, I would inspect your cannas and if they are firm, possibly with a little green on them, rather than shriveled or mushy, I would go ahead and plant them. Since cannas are tropical, the best time to plant them is after all danger of frost is past, typically around Memorial Day for your area. Cannas are best planted deep enough to just cover the rhizome (which is the technical name for what most people call the bulb). For most cases this is about four to six inches deep depending on the size of the rhizome. If you want to get a jump start, you can plant your cannas in pots indoors to get them growing before transplanting them outdoors when the weather is warmer. Water them well after planting, give plenty of light and wait to see signs of growth before watering again.