Controlling Invasive Cannas: How to Remove Them from Under a Deck

Cannas spreading between deck boards are a common nuisance. Their shallow tubers make removal straightforward.

Removal Steps

1. Dig them up. Use a sharp spade; tubers are at or just below the surface.
2. If deck clearance is low, use a sharp hoe or sturdy hand trowel on hands and knees.
3. Remove all visible tubers. Any piece left behind can resprout.

If You Want to Keep Some

• Transplant to a contained bed in full sun.
• Plant tubers shallowly, just below soil surface.
• Cut back most foliage to reduce transplant shock.
• Secure with U-shaped metal stakes until rooted.
• New growth appears quickly; they may even bloom the first year.

Cannas are vigorous but manageable with regular division. Enjoy your deck without the jungle!