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Very tall annual or biennial flower



  • LynLyn Posts: 23,090
    If you’re in a warmish sheltered area you can get 20’ + out of an Echium Pininana 
    Gardening on the wild, windy west side of Dartmoor. 

  • Blue OnionBlue Onion Posts: 2,987
    A second for hollyhock.  Also cleome.  
    Utah, USA.
  • CharlotteFCharlotteF Posts: 337
    I had an ammi majus get to 6-7ft one year. I don't think they're meant to do that! But as Fire says, rich soil grows giant plants sometimes!
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