When to plant Crocosmia in Bristol

Crocosmia spp.

Crocosmia
Crocosmia · Crocosmia spp.

Hardy perennial grown from corms in UK borders. Plant in moist but free-draining soil in sun or light shade, water well after planting, and leave the clump to settle before lifting and dividing every few years.

90 cm · Full Sun · Moderate Water

Calibrated to Bristol · average last frost around 19 Apr

Plant out March to April. Typical frost risk November to April.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
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Growing guide

What to do through the growing season

  1. 01

    Plant Corms

    8 Mar to 5 Apr

    Plant corms during 8th March - 5th April, deep and apart, in firm, well-drained soil. Water in thoroughly straight after planting.

  2. 02

    Water to Establish

    8 Mar to 17 May Dates as each sowing reaches this stage

    Keep the soil evenly moist through 8th March - 17th May while the corms root in. Give a deep soak in dry spells, then ease off once new growth is strong and the clump is settled.

  3. 03

    Deadhead Spent Stems

    3 Jun to 2 Nov

    From 3rd June, remove faded flower stems as they finish to keep the plant tidy and encourage a longer display. Cut each stem back to the base once the last flowers on it have gone over.

  4. 04

    Cut Back Old Growth

    9 Nov to 7 Dec

    After hard frost has blackened the leaves, cut the faded foliage to the base during 9th November - 7th December. Leave any green leaves in place until they die back naturally, because they are feeding next year's growth.

Suggested varieties

Popular varieties of Crocosmia to consider

Lucifer

A widely grown crocosmia with bright red flowers and good garden vigour.

Emily McKenzie

Compact, free-flowering with orange blooms marked darker at the centre.

George Davidson

A reliable yellow-flowered cultivar that works well in mixed borders.

Star of the East

Orange-yellow flowers on arching stems, useful for a naturalistic look.

Crocosmia guides by town

See how Crocosmia timing shifts in other towns with different frost dates.