Dahlia Tuber Planting ?

Discussion in 'General Gardening Discussion' started by HarryS, Apr 7, 2013.

  1. wiseowl

    wiseowl FRIENDLY ADMIN Staff Member

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    Good morning I would like some advice please,I have several Dahlias which I would like to put in pots in the greenhouse until they are ready to plant out in to the garden,what size pots and how deep do I plant these in the pots,thank you
     
  2. Verdun

    Verdun Passionate gardener

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    Morning Woo :)
    it all depends on the size of tuber but I plant small tubers, those usually available in stores, etc., in 1 litre pots. Spread roots out and just cover tops of tubers. They grow fast in early spring so be ready to pot on when roots start emerging from the bottom of the pots.
    Water very lightly at first and repeat and increase when shoots are seen.
     
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    • wiseowl

      wiseowl FRIENDLY ADMIN Staff Member

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      Good morning @Verdun my good friend and thank you ,I am trying to grow Dahlias for the 3rd year running and could do with all the advice there is,I am going to make this a sticky thread as their might be other members who it will be a help to :smile: last year I lost all 8 plants to slugs and snails they stripped them down to nothing:smile:
       
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      • Verdun

        Verdun Passionate gardener

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        Dahlias grow huge here Woo :).....some over 7’ tall ....most remain in the soil over the winter and already shooting.
        In pots it is the little slugs who cause most damage I think. I regularly look under pots (all plants and seedlings in pots) for the blighters and often they are lurking there so this is one thing you can do. Esp important that metaldehyde pellets will be banned soon. Whilst still available a couple of pellets per pot is enough to protect dahlias......folks make the mistake of over using pellets; too many and they don’t work!
        Incidentally, I once hated dahlias...thought they were gaudy, tasteless and, apart from sheer colour, had nothing to recommend them. However, I have come to appreciate them a whole lot more and prob now grow 30 or more of them. Check out the single flowered ones too like the Honka varieties
        Fingers crossed Woo you will have a summer of dahlias this year :)
         
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        • wiseowl

          wiseowl FRIENDLY ADMIN Staff Member

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          Good afternoon @Verdun my friend at the moment I have 12 tubers/
          3 of each Decorative what ever that means:smile:
          Seattle
          Lavender perfume
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        • Verdun

          Verdun Passionate gardener

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          There are different types of dahlia.....cactus, Pom Pom, anemone, decorative and more Woo according to the type of flower heads. Also miniature, giant, tall, short etc.
          I think you will find decorative are the most common group.....a dahlia expert hopefully will comment :)
          Anyway, all grown basically the same way Woo.
           
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          • wiseowl

            wiseowl FRIENDLY ADMIN Staff Member

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            Good afternoon just found this thread thought I would update it and have merged it,I have a half barrel just wondering how many dahlias I could plant in it :smile:
             
          • Verdun

            Verdun Passionate gardener

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            3 of the same variety for me Woo. I like groups of one colour, type, etc. Should look good:)
             
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            • Jasmine star

              Jasmine star Super Gardener

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              Brilliant thread. Having moved home last year I thought my Dahlia tubers had got lost but I stumbled across them the other day. I pulled a couple out of one large pot to see if they were ok and they seemed fine (see below)
              20200425_154448.jpg
              One had new shoots growing. I'm not confident enough to separate them yet so potted them up and left the others where they were. See what happens. I'm so pleased I found them though. I really enjoyed the Dahlia last year. :smile:
               
            • JOHNBHOY

              JOHNBHOY Apprentice Gardener

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              Planted a row of Dahlia tubers some 4 weeks (mid Feb) at a depth of 4 inches using fresh compost, so far nothing is showing, would this be normal ?

              Is there anyone on the forum that can advise my enquiry which I submited some 6 hours ago, please.
               
              Last edited: Mar 19, 2023
            • ricky101

              ricky101 Total Gardener

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              Hi all,

              Some of our tubers are sprouting well in the greenhouse so will be talking a few cuttings.

              A very long time ( many years) since we last took some, interested to know if rooting them in a compost with some perlite or in water is the more reliable way ? We have heat.
               
            • David F

              David F Apprentice Gardener

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              In 2022, we were walking our regular route to the high street and saw some beautiful red and white dahlias in someone's garden, so I knocked the door and he invited me back in the autumn to get some tubers. A very kind gardener.
              I planted those in 2023 and they came up lovely.
              1.jpg

              This year I dug up 3 big chunks of tubers and separated out the individual ones. I didn't really take much care doing it. I just ripped them apart and planted them in various places around the garden and in pots.
              Most of these have sprouted and so it looks like we will have lots more dahlias this year.
               
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