How should I deadhead them? How can I get them to bloom once they have already bloomed?
My Canna Plants Are Not Blooming
Certified GKH Gardening Expert
Cannas can be deadheaded on a regular basis.
This will allow the plant to put more energy into producing more flowers.
Cut the spent flower off the stalk directly above the second flowering node.
Generally a Canna has several flowers on a stalk at different stages of opening.