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Canna

Canna

Cannas (also called canna lilies) are large plants that add coarse, tropical texture to a garden, whether used in containers or planted directly in the ground. In cool climates, cannas are fast-growing plants that can be treated as annuals to fill a space with color quickly. In warmer climates, they can be left alone to create dense stands of bold colors thanks to flowers that bloom throughout the summer.

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Light:

Part Sun, Sun

Type:

Height:

From 1 to 8 feet

Width:

From 1 to 6 feet

Flower Color:

Seasonal Features:

Problem Solvers:

Zones:

7-10

Propagation

Colorful Combinations

When cannas first began to be used for their ornamental appeal, the flowers—which come in bright colors displayed on tall stalks—were the real stars. In more recent years the introduction of a plethora of hybrid crosses means these plants have become known as much for their colorful foliage as their brightly hued flowers. Instead of plain green, the foliage colors and patterns now include blue-greens, striped burgundy and gold, and cream-splashed greens. These additional options have made cannas highly desirable plants for use in gardens and containers.  

See your guide to growing tropical plants here.

Canna Care Must-Knows

In their native habitats, cannas are often seen growing close to and even in the water. These plants also do fine in regular garden soil as long as they get plenty of water. Keep them consistently moist, especially in warmer climates. Cannas are also heavy feeders. When planted in the ground they need plenty of compost and rich organic matter, as well as an occasional dose of liquid fertilizer (per manufacturer's directions). A slow-release fertilizer keeps cannas relatively happy when they're planted in containers, but regular doses of liquid fertilizer help them look their best.

Discover more plants with colorful foliage here.

As a group, cannas tolerate a  variety of sun conditions. Older varieties and species tolerate shade, but full sun brings out the best leaf color and flower show. Cannas growing in warm southern climates need a bit of afternoon shade to keep foliage from bleaching. Taller varieties need full sun to prevent flopping—which necessitates staking.

In areas where cannas are not winter hardy, they can be stored for the following year. If they are being grown in containers, keep them in the same pot and withhold water as temperatures drop in late fall. Once the foliage begins to die back, move the pots to a cool, dark place, such as an unheated garage or basement. Keep the soil dry throughout the winter until spring warms back up and watering can resume. If the cannas grow directly in the ground, dig the tender rhizomes after the first frost knocks back the foliage. Store them in a dry, cool, dark place after wrapping them in dry to slightly moist peat moss (no two bulbs should touch), then placing them in a plastic bag with holes cut for aeration. Once the soil has thawed and all danger of frost has passed (probably late spring), unwrap the rhizomes and plant them directly in the ground.

Plant can-do cannas in your garden.

Although easy to grow, cannas are susceptible to viruses transmitted by insects and poor hygiene. When you see yellow-streaked leaves and/or contorted growth, dispose of the plant because nothing can be done to cure the viruses.  

More Varieties of Canna

'Australia' canna

This variety of Canna offers a bold combination of deep purple foliage with crimson flowers. It grows to 5 feet tall. Zones 7-10.

'Cleopatra' canna

Canna 'Cleopatra' bears lush, broad leaves that accompany stems of clustered bright gold flowers, with an occasional orange bloom or orange stippling on yellow petals. It grows to 4 feet tall. Zones 7-11.

'Intrigue' canna

Grown more for its foliage, this variety of Canna does have orange blossoms in late summer. The 7' tall foliage has narrow, burgundy leaves that look stunning in the back of a border. Zones 7-10.

'Lucifer' canna

This selection of Canna produces bright red flowers edged in yellow atop a dwarf plant to 4 feet tall. Zones 7-11.

'Pretoria' canna

Canna 'Pretoria' is a large, lofty variety that flaunts yellow-stripe, broad leaves and sizable orange blooms. It grows 6-8 feet tall and is hardy in Zones 7-11.

'Stuttgart' canna

This striking variegated Canna has cream and green blocked foliage that givesa bit of protection from hot afternoon sun to prevent the white sections from burning. Peach blooms atop 7' stems add even more appeal in late summer. Zones 7-10

'Tropical Rose' canna

Canna 'Tropical Rose' this compact, award-winning variety is topped with gigantic bouquets of rose pink flowers. It grows to 2-1/2 feet tall. Zones 7-11.

Tropicanna canna

Flamboyant orange veining on broad green leaves makes this variety of Canna different. Golden orange flowers complete the paradise palette. The plant grows to 4 feet tall. Zones 7-11.

'Wyoming' canna

This selection of Canna delights with huge, ginger-orange flowers that glow against the backdrop of deep purple-green foliage. It grows 3 to 4 feet tall. Zones 7-11.

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