Q.Canna
My Canna are getting a white, hairy balls on the stems. They are healthy ad blooming but I do not know what these white hairy balls are?
Can you please advise?
Thank you.
Barb

Sounds like Scale or Mealy Bug.
https://www.gardeningknowhow.com/ornamental/bulbs/canna/managing-canna-lily-pests.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/control-plant-scale.htm