Growing Canna Lilies: Planting, Care & Overwintering

Canna (Canna Lily) – Tropical Foliage & Flowers

Pronunciation: can'uh

Cannas bring bold, tropical flair with large leaves and vibrant flowers. They thrive in full sun and average to damp soil. Space plants 18–24 inches apart (or one per 18-inch pot) and plant rhizomes 2–3 inches deep.

Planting & Early Care

• Wait until all danger of frost has passed and soil has warmed to 60°F.
• For a head start in short seasons, pot rhizomes indoors upon arrival in a warm, sunny spot; move outdoors after last frost, acclimating gradually.
• Plant rhizomes horizontally with the eye (bud) facing up.
• Fertilize after planting with balanced 10-10-10 and again in late July.
• Deadhead spent flowers to encourage rebloom and keep plants tidy.

Height Control

In long, hot summers, cannas may exceed label height. For more compact plants, cut back to the 3rd or 4th leaf (about 36 inches) after each flowering flush.

Overwintering (Zones colder than 7)

• After first frost, cut stems to the ground and lift rhizome clumps with a spade or fork.
• Store in a dry, well-ventilated place at 50–60°F.
• Container-grown plants: let the pot dry out and store in a cool location.

Hardiness

Cannas are hardy to Zone 7 (0°F). In warmer zones, they can remain in the ground year-round with a protective mulch.