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Dahlias
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?
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I wouldnt touch them now. Wait until they are starting into growth next spring and do it then.
When you don't even know who's in the team
S.Yorkshire/Derbyshire border
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!