Canna Lily Bulbs- $5 each for larger bulbs. The ones pictured where planted May 1st this year. Some grew over 5'. They can produce bright red flowers and have beautiful purple/red leaves.
Can be grown in large pots or in ground. Planted in spring ideally after Temps stay above 40, dig up and store in a cool dry place in a bag somewhere like a basement and replant again the following spring!
These produce new rhizomes each year which can be broken off of the main bulb when large enough to grow your collection.