Question
What are the little bulb-looking things that appear after the canna lilly flower has died? Is that a new seed and can they be planted to grow more cannas?

Answer
Carole, you are correct. It is the seed pod that forms once the bloom has faded. If you plant these seeds next spring, they will form bulblets under the soil. The second year the bulblet matures into a rhizome which will produce a canna plant the following spring.

Have a great week.

Mike