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What's wrong with my dahlias?

I grow my dahlias in pots and they have been thriving all season and continues to do so now, all except one pot.  This one pot has lots of buds but few that actually fully flower.  They swell up and seem like they are about to open but then turn brown and look as though they have dried out (see photo).  This pots gets the same amount of watering as all the other dahlia pots but is the only one displaying these 'dead looking' flower buds.  What could it possibly be?


  • DovefromaboveDovefromabove Posts: 86,913
    It looks as if you’ve made the common mistake of mistaking dahlia seedheads for flower buds ... those are seedheads which are cone shaped whereas the flower buds are sort of round and cushion shaped. 

    The difference is shown here

    Prompt deadheading as the spent flowers drop their petals helps avoid the mistake and encourages more flowering. 

    Hope that helps 😊 

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.

  • sarinkasarinka Posts: 270
    Good info, Dove👍
  • FairygirlFairygirl Posts: 54,353
    Yes - those are the seedheads. It's an easy mistake to make with lots of plants  :)
    It's a place where beautiful isn't enough of a word....

    I live in west central Scotland - not where that photo is...
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