Iris chrysographes black-flowered

Siberian iris

Slender, delicate iris grown for its upright small black flowers, finely flecked in contrasting canary-yellow at its throat, must have moisture to multiply

Val Bourne - Garden Writer

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  • Position: full sun or partial shade
  • Soil: well-drained, moderately fertile soil
  • Rate of growth: average
  • Flowering period: May and June
  • Hardiness: fully hardy

    Dramatic, indigo-violet, almost black flowers appear in May and June above strap-like grey-green leaves. This clump-forming, beardless iris, related to the moisture-loving Siberian iris, makes an eyecatching feature in a sunny, boggy area of the garden, or beside water.

  • Garden care: Plant in soil that has been improved with well-rotted manure or garden compost and do not allow to dry out, particularly as the plant is getting established. If planted in a container, it will need dividing and repotting every couple of years in spring.

  • Harmful if eaten

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2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    Hello there, I received my iris christographes 3 litre pot yesterday, many thanks. Can I leave it in this pot for a while, or do I need to put it in a bigger pot and what size, as in summer garden dry, so need to keep it well watered as you say. Thank you . Best wishes .
    Asked on 21/2/2015 by Ali from W Sussex

    1 answer

    • Plant Doctor


      Hello there
      You can keep it in this pot for a few weeks, but it will need to be planted up into a larger pot, but don't let it dry out. I would plant into a 30-40cm diameter pot and then divide and repot every couple of years.
      Hope this helps.

      Answered on 4/3/2015 by Anonymous from crocus
  • Q:

    Hi there, could you please tell me how long the flower of this plant should last, I have had 2 flowers on my iris and they have only lasted 48 hours. This is a new plant only purchased this year and I have never grown irises before so am completely ignorant I'm afraid. It was fed when I planted it and I give it a feed every couple of weeks, it is growing very well but I don't know if the flowers are lasting such a short time because it is a new plant. Thanking you in advance.
    Asked on 16/6/2014 by Carrots from Staffordshire

    1 answer

    • Plant Doctor



      Each iris flower is short-lived, but as the plant gets older it will produce more so the display will go on for longer.

      Answered on 26/6/2014 by helen from crocus
Displaying questions 1-2

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