I planted about 12 small canna plants (that I grew from seed in february/march indoors) a few months ago into my flower bed. Many of them have more canna growing around them lately. My question is how do they multiply from a plant grown from seed just months ago? Do they form bulbs that quickly and then bulblets?
I'm going to have a canna jungle out there. Do I need to pull out the smaller ones and replant or should I just let them fight for the space?