Centaurea 'Jordy'

knapweed

9cm pot
pot size guide
£5.99 Buy
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3 x 9cm pots
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  • Position: full sun or partial shade
  • Soil: well-drained soil
  • Rate of growth: average
  • Flowering period: May to July
  • Hardiness: fully hardy

    Magnificent, deepest plum-purple flowers top upright stems in late spring and early summer above bushy clumps of foliage. The flowers have a shaggy appearance and mix well with a whole host of colours including rusts, reds, purples and pinks. A new twist on a cottage garden classic, the seedheads will provide interest for several months after the flowers have faded.

  • Garden care: Stake with brushwood or bamboo canes before the flowers appear. Cut back to the ground after flowering and a second flush may appear. Lift and divide large clumps every three years in spring.


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1 Question | 1 Answer
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  • Q:

    Hi, can you tell me why you need to lift and divide clumps every 3 years - what happens if I don't do that? They overcrowd and suffocate or...?

    By the way: do they spread?

    Thanks
    Asked on 7/4/2014 by Aicha from London NW

    1 answer

    • Plant Doctor

      A:

      Hello,

      These do form clumps, which get bigger every year and will eventually grow to around 60cm across. You do not need to lift and divide them every 3 years, but if you don't, then the centre of the clump tends to become congested and it will then produce fewer flowers.

      Answered on 7/8/2014 by helen from crocus
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