Canna overwinter - so overwinter Indian flower tube in the pot

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Canna - flower tube

The cold-sensitivity of a Canna is no reason to leave the tropical beauty of the blossom after a single season to their fate. In fact, all the beautiful varieties of a Canna indica have the floral persistence of a perennial. It is therefore worthwhile to take a closer look at the right measures for hibernation. This guide sets out the best strategy for hibernating Indian flowerpipe. Learn everything here for the perfect preparation, the ideal winter quarters and a professional care.

Why does not the Canna tolerate frost?

For generations, the wonderful Canna is a familiar image when planted out or spreading in the pot with its lavish summer blooms in parks and ornamental gardens, colorful South Seas flair. This is hardly surprising, since Indian flowerpots have been cultivated in Europe since the 16th century. Notwithstanding this long history in our regions, the magnificent flower beauty has nothing to oppose winter conditions. Home to Canna in South America, especially Brazil, Argentina and Colombia, where annual average temperatures rarely drop below 20 degrees Celsius.

Why is wintering still worthwhile?

Their tropical origin does not mean that Indian flowerpipe is limited to a one-year guest performance in the garden. In their habitats, the plant thrives as a herbaceous perennial, which is wild in the wild. Following its heyday, the pseudo-stem with the leaves retracts into its powerful, up to 60 cm long rhizomes. With the onset of the next growing season, the Canna drives out of their persistence organs to re-stage their flower festival. At the right location and cared for properly, the Blumenrohrgew├Ąchs can be very old. This habit makes a hibernation worthwhile.

preparatory work

It's not enough just to give a canna in the pot before winter. So that the tropical plant survives the cold season, it depends on a targeted preparation. This includes that you can enjoy the splendid flowering period until October in peace and quiet. Then give the Indian flower tube enough time to transfer the remaining nutrients from the pseudo-stem and the leaves into the rhizomes. This process is recognizable by completely withered flowers as well as brown-orange discolored leaves and stems. How to properly prepare a Canna indica for wintering:
  • At the beginning of November cut the shoots to 5 to 10 cm
  • Carefully lift the rhizome out of the ground using a digger fork or small shovel
  • Remove adhering soil with a paintbrush or rinse with water
  • Cut off damaged, rotten root pieces with a sharp, disinfected knife
  • Remove dried, dead hair roots as well

Canna - flower tube

There is no reason to worry if the digging is associated with a creaking noise. The stable rhizomes cope with the procedure easily. Where a Canna felt well cared for the summer, their roots have branched numerous. Too large rhizomes can be shared on this occasion and in this way the plant will multiply in the same train. Cuts should be dusted with some charcoal ash for disinfection.
Tip: The risk of rot and mildew in winter quarters is reduced if you sprinkle the rhizomes with a quinosol solution and allow to dry long before adding them. The agent is available in tablet form in the pharmacy. Dissolve 1 liter of Chinosol per liter of lime-free water and pour the mixture into a hand sprayer.

Instructions for hibernation in the pot

The prepared Canna rhizomes set aside for a few days in a shady, airy place to dry. Well suited is a grid as a base, so that the roots can dry from all sides. The earth sprouts spend the winter dry, cool and frost-free. That is how it goes:
  • The rhizomes hit in several layers of newspaper (no glossy paper)
  • Alternatively put in a pot with dry sand, sawdust or straw
  • Spend in a dark room with temperatures around 10 degrees Celsius
Since the Canna roots are permanently threatened with rot during the winter, please choose a winter-like as air-dry as possible. Check the rhizomes weekly for brown spots. In the early stage, you can cut out small decay spots and disinfect them with charcoal ash.
So that an Indian flower tube does not prematurely expel in winter quarters, the thermometer must not exceed the 15-degree mark. If the room in the basement is in the immediate vicinity of the heating system, heat could be a problem, even though it is dark and air-dry here. Better suited is a dark, frost-free attic or unlit storeroom.

Transition from winter to spring

Flowering rhizomes offer the option of a premature flowering period by driving the plant forward. For this purpose, a Canna is awakened from hibernation in the course of March. This process is similar to the advancement of tuber begonias or dahlias. How to proceed:
  • Get rhizomes out of winter quarters
  • Remove any adhering earth with a brush
  • Put a mix of 4 parts sand and 1 part leaf compost into a pot
  • Insert the rhizomes so deeply that they are just covered with substrate
  • Set up in a bright, warm location
  • First, pour only a little until the first shoots show up
  • Water more proportionally to growth and fertilize every 14 days

Canna - flower tube

At the beginning / middle of May, pound the pre-planted plant into its original container with nutrient-rich substrate. After hardening for 8 to 14 days in a partially shaded place, your Indian flowerpipe takes a sunny, warm spot on the balcony and terrace. Thanks to the vital growth advantage, the waiting time for the beginning of the flowering period is reduced by at least 2 weeks.
Tip: The more powerful a rhizome, the more vigorously it survives overwintering. A decisive factor in its vitality is the quality of the tub substrate during the summer growth and flowering period. A nutrient-rich compost-based soil is well-suited, ideally enriched with well rotted horse dung.

Overwintering in the bed - That's how it works

In regions within the Z8 winter hardiness zone, a Canna planted in the bed may overwinter. The herbaceous parts of the plant already die off at temperatures below 10 degrees Celsius. The strong rhizomes survive deep in the ground after all still cold to - 10 degrees Celsius. On the Lower Rhine, in mild river valleys or wine-growing areas, you can thus save yourself the opportunity to get into a winter quarter. Instead, escort Indian flowering tub in the bed with the following precautions through the winter:
  • At the beginning of November, cut the plant down to a few feet above the ground
  • Spread a 15 to 20 cm thick layer of mulch on the root disk
  • Suitable materials are foliage, brushwood, fir fronds or straw
  • Unsuitable materials are stones or gravel
Please note that the described measures only lead to success in winter-mild landscapes. In the foothills of the Alps, in the middle mountains as well as in the east of Germany all experiments of an overwintering under the open sky are doomed to failure.

Beautiful varieties

Did this guide show you how easy it is to overwinter Canna? Then enrich your summer garden with other, magnificent flower beauties of this exotic genus of plants. The following selection will introduce you to classical and new hybrids for tubs and beds.

Dwarf Canna for the pot

Cleopatra (Canna indica hybrid)
The little beauty rightly bears the name of an Egyptian queen. Their beautiful flowers shine in a warm shade of yellow and are decorated with red speckles. The rich green foliage harmonizes perfectly with this play of colors.
  • Growth height: 50-60 cm

Canna - flower tube

Cherry Red (Canna indica hybrid)
The popular flower tube variety is set in cherry-red flowers, which thrive on deep green leaves. Their compact stature and sturdy stems also cope with a windy location that can bring man-sized hybrids in distress.
  • Growth height: 30-60 cm
Queen Charlotte (Canna indica hybrid)
One of the finest classics within the diverse variety family must not be missed in this selection. The royal Canna charms with canary yellow, red-striped flowers from May to October.
  • Growth height: 30-60 cm
Evening Star (Canna indica hybrid)
If you are on the lookout for a medium-sized Canna, we would like to recommend this variety to you. Evening Star puts a splash of color in the bed and tub with crimson flowers over lush green leaves. The Indian flowerpipe is suitable both for the large pot on the sunny balcony and for a sun-drenched front garden.
  • Growth height: 60-90 cm

Canna varieties with ornamental foliage

Pink Sunburst (Canna indica hybrid)
The spectacular innovation trumps with deep pink flowers and pink-green-black-striped leaves. A fantastic eye-catcher for every sunny location in the garden and on the balcony. So much color splendor lets the somewhat shorter flowering season from June to August get over.
  • Growth height: 100-120 cm
Gold vein (Canna indica hybrid)
Anyone who was once able to experience the floral appearance of this Canna, likes to take on the little effort of hibernation. Goldader keeps what her name promises. The gold-yellow flowers are accompanied by green-yellow-striped leaves. From July to October, the flowering period extends. Vorgetriebe plants start their flower dress already in June.
  • Growth height: 60-80 cm
Striata (Canna indica hybrid)
This successful breed combines orange-iridescent flowers with light green-dark green-cream-white-striped foliage. Anyone who wants an Indian flower tube with a subtle yet decorative color scheme, is well advised with Striata.
  • Growth height: 100-120 cm

Majestic Canna varieties with visual protection function

Tropicanna (Canna indica hybrid)
With imposing stature, numerous orange flowers and a dense foliage dress, this giant Canna is recommended as Zaungucker with visual protection function. Of course, the exotic flower likes to fulfill this task in the big bucket on the balcony and the terrace. In this case, we recommend a supplementary support bar and a sheltered location.
  • Growth height: 150-200 cm
Canna Liberte (Canna indica hybrid)
Would you like an Indian flower tube with Gardema├č, puts this orange-flowering premium variety into focus. In the bed, Canna Liberte likes to take over the function of a Leitpflanze or joins Tropicanna to the fence, as the most beautiful variant of a demarcation
  • Growth height: 120-180 cm
The exotic flower festival of a Canna is not limited to a single season in the pot and bed. Respectful of their sensitivity to frost, the South American flower beauty thrives perennial. On the other hand, granting the plant in the pot without further ado is not enough for successful wintering. The herbaceous plant parts are cut off in late autumn, so that only the rhizomes are granted. In the frost-free, dark winter quarters, an Indian flower tube survives the cold season at temperatures of around 10 degrees Celsius. The roots are smelted during this phase in dry sand, sawdust, straw or newsprint. If you would like to enjoy an extra early flowering period, the rhizomes will wake you from hibernation in March and drive you in a bright, warm location in a mix of sand and foliage compost. In winter-gentle gardens, Canna rhizomes stay in the soil after the autumn pruning, well protected by a thick layer of leaves, brushwood or straw. However, cultivating in a pot also requires dry wintering behind glass here.

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