In detail

How to plant and cultivate crocosmia?

How to plant and cultivate crocosmia?

The characteristics of crocosmia

  • Type: flower and flowering plant
  • Height: from 30 to 60 cm, from 60 to 80 cm, from 80 cm to 1 m, from 1 to 2 m
  • Flower colors: red, yellow, orange
  • Desired exposure: sunny, semi-shaded
  • Type of soil: normal, well drained
  • Foliage: spent
  • sanitizer: no
  • variety: crocosmia masonorum, crocosmia golden fleece, crocosmia Jackanapes…

Origins and peculiarities of crocosmia

Coming from South Africa, the crocosmia, also known as Montbretia, is a perennial bulbous from the Iridaceae family.

Visually, the crocosmia grows in an erect tuft; its long, deciduous green leaves resemble those of the iris, and can become persistent in areas with a mild climate. As for the crocosmia flowers, present on the plant from June to September, they are similar to small gladioli, and grow in compact and branched spikes. With their pretty yellow, red or orange hues, they are second to none to light up a garden or a terrace!

With its tall stems and magnificent flowers, the crocosmia is a flowering plant ideal for:

  • Flower beds, where you can easily marry them with flowers such as the daisy, sunflower, anthemis ...);
  • Pot culture (choose a large pot to prevent the weight of the crocosmia leaves from falling!).
  • Bouquets of fresh flowers (those of montbrétia have an excellent hold when cut).

To note: the genus of crocosmias gathers 7 species, among which we will notably note the famous crocosmia masonorum, one of the most appreciated because of its great robustness and its rusticity. In addition, it can reach a substantial size (1.20m). We will also mention the crocosmia "golden fleece" lemon yellow, or the "Jackanapes" with tricolor flowering.
 

Planting and flowering of crocosmia


The crocosmia is not excessively demanding on the level of the ground which receives it as long as this one is fresh and well drained. Question exposure, prefer a sunny location for your plant, even if the crocosmia is able to flourish with a slight shade.

Plant the montbrétia in spring or fall, for a flowering that will occur the following summer and may last from June to September depending on the species.
If you want grow your crocosmia in a pot, put it in a mixture of soil and potting soil so that it takes good.
 

Crocosmia maintenance

As soon as the exposure suits him and the soil is well drained, the crocosmia will flourish without your help and requires almost no maintenance, like a watering which you can dispense with (except if summer is particularly dry, because the plant usually, by its origins, rainy and humid summers).

It may however be advisable, in order to prolong flowering, to cut the flower stalks as soon as they have wilted. In addition, adding fertilizer in the spring can help the plant to get stronger.
 

Diseases and parasites of crocosmia

Because of its great robustness, the crocosmia is not very prone to diseases and is not overly afraid of parasites. It will however be advisable to keep an eye on gastropods of all kinds which can find pleasure in attacking them.

If the summer is particularly hot and dry, crocosmia can also be prone to attack by red spiders. To overcome it, soak 1 kg of nettle leaves in 10 liters of water for a whole day, and spray the pure solution on the plant. Repeat the operation if necessary.