Answer: Cannas will not sprout until the soil has warmed, and may rot if planted too early in cold soil. You might want to dig down carefully and make sure they are still in good condition, be careful as you may encounter the top growth just beginning under ground. Next time, you might want to start them off in large pots for a head start, then wait to plant them in the garden until a bit later. In warm soil they seem to come popping up within a week or two at most.
Q&A Library Searching Tips