Need advice please. I have a row of dahlias which was planted 5 years ago.  Here in the Westcountry, it isn't necessary to dig them up every autumn, so I cut them back in the winter and give a good mulch.  But, they are now overcrowded and need to be thinned out.  When is the best time to do this, now or next spring? 


  • punkdocpunkdoc Posts: 5,112

    I wouldnt touch them now. Wait until they are starting into growth next spring and do it then.

    There's one more kid that will never go to school
    Never get to fall in love,never get to be cool.
  • Thank you so much for your advice, especially the reminder that each divided piece must have a stem. I wouldn't have done that!    I will leave them alone until spring and then tackle the division! 

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