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Crocosmia: planting and advice on caring for it


The crocosmia is a bulbous flower that is making a comeback in the garden.

As easy to grow as it is decorative, it has a very interesting faux gladiolus look.

In summary, what you need to know:

Last name : Crocosmia
Family : Iridaceae
Type : Bulbous or perennial flower

Height : 60 to 120 cm
Exposure : Sunny and partial shade
Ground : Ordinary but well drained

Flowering : June to September

Planting crocosmias

Ideally, the crocosmia crashes in the fall or in the spring for a flowering the following summer

  • Plant the crocosmia bulbs at 10 cm deep in the sun and where it is hot in summer.
  • The crocosmia likes well-drained soils without being too buried.
  • Observe a sufficient spacing of 5 to 10 cm between each plant.
  • Let the rhizomes protrude very slightly so that they receive the sun on their upper part.
  • It is more aesthetic to plant the crocosmia in small groups of several bulbs.

Approximately every 3 years it is advisable to divide the stumps by separating the bulbs in order to regenerate the foot.

  • The division is preferably done in summer
  • Take the stump out of the earth using a spade
  • Clearly cut the bulb using a sharp knife
  • Replant the new strain of crocosmia in a suitable location
  • Water generously

Crocosmia seedlings

In sowing, prefer sowing in pots in September-October.

  • You can leave them outside and under cover all winter.
  • Flowering will only take place 2 to 3 years after sowing.
  • You will proceed to transplanting in the ground as soon as the first leaves emerge.

Pruning, maintenance of crocosmias

The crocosmia is a very easy to maintain perennial and does not generally require any care when it is well established.

  • Weed regularly around so as not to let the weeds take over the rhizomes
  • Remove wilted flowers as you go, but leave the foliage until it turns yellowing, usually until September.
    The crocosmia needs its leaves to turn yellow in order to build up the reserves it needs for the next flowering.
  • Remove the weeds that grow in the center of the plant to clear the rhizomes.
  • No need to water because the plant does not need it.

Crocosmia in winter

Whether in a pot or in the ground, crocosmia is resistant to freezing as long as it is neither too strong nor too long.

In the event of a long and vigorous winter, it is imperative to protect your crocosmia bulbs.

  • A good mulching is enough if the temperatures do not drop below -5 °
  • You will have to dig up the bulbs and protect them from frost if you fear a severe frost

To know about the crocosmia

Native to South Africa, the crocosmia offers pretty, colorful tufts that tend to expand over the years.

Particularly easy to maintain, it can withstand even mild winter frosts, provided they are neither too strong (-5 °) nor too durable over time.
Some varieties even resist down to -15 ° if the soil is not too wet in winter.

The foliage is a pretty green while its flowers offer warm, shimmering colors, ranging from yellow to red to orange.

Smart tip about crocosmia

The lifespan of a crocosmia can range from 5 to 20 years.

To optimize its lifespan, add a special bulbous organic fertilizer every year after flowering.

Video: How To Divide u0026 Propagate Your Hostas (October 2020).