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Knautia Macedonia Question

RosiebeatonRosiebeaton Posts: 20
hi there, I planted two of these a few weeks ago and I think I have placed too close together. I think they should be 12 inches apart - they look as if they will flower soon - will they be ok or should I replant further apart. I am a newbie 😊 


  • LynLyn Posts: 22,005
    One plant will grow to about 2 - 3ft diameter and at least 3’ tall.  I always need to stake mine or it would be over everything. 
    Gardening on the wild, windy west side of Dartmoor. 

  • fidgetbonesfidgetbones Posts: 16,720
    edited May 2019
    I plant them in threes, a foot(30cm) apart. That way they look like one big plant.They do need support, some pea sticks or one of the circular things with stakes.

  • RosiebeatonRosiebeaton Posts: 20
    Thank you for your advice, that’s great. Looking at them today I think they have the powdery look about them which could be mildew?? So they might have to go?! 
  • fidgetbonesfidgetbones Posts: 16,720
    They usually get mildew after they have flowered , especially if it is a bit dry.  At that point I cut them down and they resprout.  Don't mistake the grey leaved  appearance for mildew.
  • Silver surferSilver surfer Posts: 4,467
    If you dead head the flowers it just goes on and on.
    Gets huge and floppy.
    Perthshire. SCOTLAND .
  • RosiebeatonRosiebeaton Posts: 20
    Ok thank you ☺️ 
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