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Colchicum speciosum

Autumn crocus

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does not flower in June

Plant does not flower in July

Plant does not flower in August

Plant does flower in September

Plant does flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Colchicum speciosum
  • Common name: Autumn crocus
  • Family: Colchicaceae
  • Plant Type: Bulb
Flower colour:

Pink

Foliage colour:

Green

Although often called autumn crocus, colchicums are not related to true crocuses. There are winter- and spring-flowering species, but the most common ones bloom in September and October. They flower when least expected, the large blooms suddenly appearing from the bare earth without any leaves – hence the common name naked ladies.

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Colchicum speciosum bears dramatic pink-purple flowers. The flowers appear alone, with the leaves following in spring. It’s ideal for naturalising in grass or at the front of a sunny border.

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Grow Colchicum speciosum in well-drained soil in full sun. All parts of the plant are poisonous, so wear gloves when handling the bulbs.

How to grow Colchicum speciosum

  • Plant size

    18cm height

    10cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Front

  • Sun exposure: Full sun
  • Hardiness: Hardy
  • Soil type: Acidic / chalky / alkaline / clay / heavy / moist / well drained / light / sandy

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does not flower in June

Plant does not flower in July

Plant does not flower in August

Plant does flower in September

Plant does flower in October

Plant does not flower in November

Plant does not flower in December

Divide
Divide

Do not Divide in January

Do not Divide in February

Do not Divide in March

Do not Divide in April

Do not Divide in May

Do Divide in June

Do Divide in July

Do not Divide in August

Do not Divide in September

Do not Divide in October

Do not Divide in November

Do not Divide in December

Colchicum speciosum and wildlife

Colchicum speciosum has no particular known value to wildlife in the UK.

Is Colchicum speciosum poisonous?

Colchicum speciosum can be toxic.

Toxic to:

Toxic to Cats

Toxic to Dogs

Toxic to Horses

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Livestock

No reported toxicity to People