Arum, calla: a flowering of great beauty

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The calla, often called arum, is undoubtedly one of the most beautiful bulb flowers.

In summary, what you need to know:

Nom : Zantedeschia aethiopica
Family : Aracées
Type : Vivace

Height: 50 to 100 cm
Exposure: Sunny, partial shade
Soil: Rich, well drained

Flowering : June to October

From planting to pruning, each maintenance action contributes to the development and flowering of the arum.

Plantation of l’arum

Arum bulbs are planted in early spring at a depth of 4-5 cm, from March to May.

  • Respect a distance of about 30 to 40 cm between each bulb because the arum has large leaves and needs space to develop.
  • Choose a sunny but not hot location. The arum tolerates partial shade.
  • Beware of soils that are too dry because the arum needs cool, moist soil .
  • The soil can be enriched at planting with fertilizer or a manure and seaweed type amendment.

Mix your lilies with other bulbs that bloom in summer, find all the advice.

Arum en pot

You can plant an arum in a pot provided it is of sufficient size.

  • Provide a pot with a diameter greater than 40 cm
  • Make sure the pot has a hole in the bottom to allow water to drain
  • Plant the calla lilies with special flower soil

In pots, the arum needs regular water and should be watered as soon as the soil is dry on the surface.

Maintenance of calla lilies

Easy to grow and maintain, the arum requires little care when it is well established.

The arum will appreciate being given a winter cut by pruning it every year to stimulate the appearance of new shoots in the spring.

Size of arums

  • Cut short at the first frosts .
  • Do not cut before the complete yellowing of the leaves , because it is at this time that they constitute their reserves for the next flowering.

For spectacular flowering , add special fertilizer for bulb flowers or flowering plants in early spring.

Watering calla lilies

Water little at the beginning then regularly as soon as the flowers appear , until the end of the flowering period.

The arum grows very well at the edge of a body of water, which reveals its great water needs .

Like all bulbs that flower in summer , water in case of prolonged drought or high temperatures.

For the potted arum , one must water as soon as the soil is dry on the surface and add fertilizer for flowering plants several times a year.

Arum en hiver

The arum or calla resists quite well to the coldness of winter.

In more northern regions, protect the rhizomes with a good layer of mulch.
As mulch, you can use dried leaves , hemp or flax chaff, or even ferns .

Tip : Before winter, take part of the rhizome that you will put in a pot in your house and you will thus have arums in winter.

Potted arum, care tips

Once the foliage is totally wilted , you can cut the leaves to the shortest .

  • Take the bulb out of its pot, taking care to lightly clean it of the earth around it.
  • Install it for the winter in a cool place but where it does not freeze throughout the winter
  • This place must also be very dry and without light , a small pierced shoe box for example.
  • In March , you can take out your bulb and replant it in new soil.
  • Then resume watering when the soil is dry and your arum will flower again.

You can do the same operation without taking the bulb out of its pot, but the soil will need to be renewed every 2 years or so.

  • Find our advice on all the bulbs that bloom in summer

To know about lilies

The arum is a bulbous perennial native to South Africa and not Ethiopia as its Latin name suggests.

Particularly exotic, it is perfectly adapted to wet areas such as ponds but will also be the perfect plant for your beds, borders or in isolated tufts .

> Mix your arums with other bulbs that bloom in summer

Although pronounced like an aroma, it is indeed arum that we write!

If its flowering is sometimes too short it is also because we never tire of seeing its flowers.

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