Canna Information
Ehemanii - Growing Instructions
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Ehemanii is a first-rate, rare variety for canna collectors. We love its airy foliage that grows wide, topped with a pretty pink pendulous bloom. It doesn't tolerate storage or shipping as well as other cannas, so Ehemanii was nearly lost in the 20th century. After years of careful greenhouse cultivation, we can finally share Ehemanii with you for the first time in the 97-year history of Horn Canna Farm.
Like other cannas, Ehemanii grows well in the proper growing conditions. However, unlike other varieties, it does not store well as a rhizome. For this reason, it can be challenging to find bulbs for purchase. Ehemanii is best suited to Zones 8 and warmer where it can stay in the ground during winter. Zone 7 gardeners can grow this variety if planted on the south side of a fence, building, or home with a layer of mulch for the winter. It does NOT like to be dug and stored for winter.
To safely ship Ehemanii we dig, package, and ship the rhizomes same day. Schedule your ship date as close to planting day as possible. You will want to plant Ehemanii upon arrival. Ehemanii can be planted outdoors after the last frost when soil temperatures average 60°F.
Rhizomes need 24-36' of space. It is gorgeous in a large pot on a sunny deck or in your flowerbed. We love it planted in front of canna Musifolia or behind canna Confetti. Water frequently and deeply in the heat of summer. Fertilization during the growing season will encourage improved blooms and growth. You can expect to see blooms about 90 days after planting your rhizome and will continue to enjoy blooms until frost.
We do not recommend storing this variety as a dormant rhizome. Instead, for zones 8 and warmer, we recommend leaving it in the ground with a generous covering of leaves, mulch, or hay. For those in zone 7, cover the same way, but make sure to plant in a protected location (examples: near the foundation of your home or the south side of a fence). The rhizome clumps will need to be thinned every few years, this is best done in the spring. Ehemanii is not winter hardy for zones 6 and colder.
For those in colder zones who want to try growing Ehemanii, you may be successful at overwintering this variety if you keep it growing indoors during the winter. Before the threat of first frost, cut the stalks down to 2-3 feet, gently lift the rhizomes, and divide into clumps with 1-3 stalks per clump. Pot them immediately, careful to keep as many roots intact as possible, and place them in a warm sunny window. Winter growth is slower in comparison to the summer, so reduce watering and do not fertilize. In spring, plant outside and do it all over again!
We hope you enjoy growing this exclusive, vintage canna!