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How cold is cold for a Dahlia?

EmmaP2EmmaP2 Posts: 33
So, I have got my Dahlia's out of their winter storage and potted them up.  In the absence of a greenhouse, how cold would be too cold for them to be left on south facing patio?  Would covering the pots in bubble wrap be a good solution?  The pots are rather large - so I am trying to see if I can avoid bringing them indoors into the house...Advice please.


  • Janie BJanie B Posts: 865
    I usually leave my dahlias in the ground, and just cover them with a mound of compost and an upturned plant pot (think this was advice from Sarah Raven), and they do fine here in Lincolnshire. I would think so long as you don't have a frost, they should be ok. Put them up against a wall for further protection, maybe. 
  • fidgetbonesfidgetbones Posts: 16,527
    A frost will turn them into a slimy mess.
  • EmmaP2EmmaP2 Posts: 33
    Thanks Janie B - we are on clay here, so I always dig them up and put them to bed in the garage to overwinter!  Trouble is they are getting so large now (the tubers) that I need tubs like buckets to start them off - which makes bringing them indoors more problematic!  I might try tucking them into the corner and hope that being on a south facing wall will keep them safe....
  • fidgetbonesfidgetbones Posts: 16,527
    Mine are in buckets. I need a bigger greenhouse.
  • oooftoooft Posts: 191
    edited March 2019
    Have you thought about dividing them? More plants and easier to manage for you. A bit of insurance against losing a favourite plant too

  • EmmaP2EmmaP2 Posts: 33
    Thanks oooft - I have taken some of the tubers off and put them in smaller pots - but the "mother plants" are still huge!  Garden is not large enough for any more plants unfortunately...
  • oooftoooft Posts: 191
    Can you not demolish part of your house and create more space for plants?  :D
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