Ra Canna flowers
(Photo courtesy of NetPS Plant Finder)
Plant Height: 4 feet
Flower Height: 6 feet
Spread: 3 feet
Hardiness Zone: (annual)
Other Names: Water Canna
A true water Canna Lily with grey-green narrow leaves; showy yellow flowers on top of this medium to tall variety; perfect for borders or as a pond accent; perennial only where roots don't freeze
Ra Canna features bold spikes of yellow flag-like flowers at the ends of the stems from mid summer to mid fall. Its attractive large pointy leaves remain bluish-green in colour throughout the year. The fruit is not ornamentally significant.
Ra Canna is an herbaceous annual with a rigidly upright and towering form. Its wonderfully bold, coarse texture can be very effective in a balanced garden composition.
This plant will require occasional maintenance and upkeep, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting hummingbirds to your yard. It has no significant negative characteristics.
Ra Canna is recommended for the following landscape applications;
Planting & Growing
Ra Canna will grow to be about 4 feet tall at maturity extending to 6 feet tall with the flowers, with a spread of 3 feet. Although it's not a true annual, this fast-growing plant can be expected to behave as an annual in our climate if left outdoors over the winter, usually needing replacement the following year. As such, gardeners should take into consideration that it will perform differently than it would in its native habitat.
This plant should only be grown in full sunlight. It prefers to grow in moist to wet soil, and will even tolerate some standing water. It is not particular as to soil pH, but grows best in rich soils. It is highly tolerant of urban pollution and will even thrive in inner city environments, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This particular variety is an interspecific hybrid. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.
Ra Canna is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.