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Dahlias 2017

Discussion in 'General Gardening Discussion' started by JWK, Feb 7, 2017.

  1. JWK

    JWK Gardener

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    I've bought some new varieties this year from Jack Gott (saw him on GardenersWorld last year). So I have just received the new tubers and the instructions say to start them in at 50deg now, in trays half filled with compost. I thought it was a bit early but don't want to lose them so I have done so.

    Anyone else started theirs?
     
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    • Linz

      Linz Head Gardener

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      Ooh don't tempt me! I started them all in the kitchen last year, no-one was overly impressed with 12 or so pots lined up in there for a few weeks! I'm itching to start them off and try cuttings from the prettiest ones (hope I labelled them correctly!)

      Think I will start them in trays instead in a week or so, I do have some new tubers that seem on the dry side so will give them a spritz.

      There's a trial with dahlias from seed, seeing which ones are more attractive to bees. Will find the link now :)
       
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      • Linz

        Linz Head Gardener

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      • Freddy

        Freddy Miserable git, well known for it

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        Too early yet I reckon?
         
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        • Freddy

          Freddy Miserable git, well known for it

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          That said, what do you plan to do with them John? Take cuttings?
           
        • JWK

          JWK Gardener

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          Yes I do want cuttings, so an earlier start is needed I understand.
           
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          • Freddy

            Freddy Miserable git, well known for it

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            Makes sense. I never got on with cuttings, but probably me doing something wrong. My usual method is division which works well for me. The biggest problem i find is when they really get going, having to put them in large containers until the risk of frost is gone. That said, I always allow for frost right up to the end of May.
             
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            • HarryS

              HarryS Eternally Optimistic Gardener

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              Second half of March when I plant my Cactus Dahlia tubers. I plant them in plant pots in the GH , for planting out late May.
              May have a go at dividing tubers at planting time. Another skill I have not attempted.
               
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              • "M"

                "M" Total Gardener

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                I bought a bag of mixed dahlias to try this year (from a cheap shop). On that label it says to plant between January and May :scratch:
                 
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                • "M"

                  "M" Total Gardener

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                  As they were only from a cheap shop, I decided to experiment and planted them (in the ground!) yesterday in a sunny/hot spot. We shall wait and see if anything happens :heehee:
                   
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                  • JWK

                    JWK Gardener

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                    Mine are really coming on now in the greenhouse:
                    20170319-P3190042.jpg

                    ... and a few cuttings taken from them:
                    20170319-P3190041.jpg
                     
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                    • CanadianLori

                      CanadianLori Total Gardener

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                      @JWK I really like the shape of the leaves.I've never grown any but have heard they are beautiful.
                       
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                      • HarryS

                        HarryS Eternally Optimistic Gardener

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                        Have a go @CanadianLori ! Growing Dahlias from tubers is quite easy . I grow the tall cactus type of Dahlia , I will be potting them up in a week or so , in the GH . There is a huge variety , and generally the tubers are quite cheap . The late summer display is stunning if planted as a group :blue thumb:
                        How to plant and grow dahlia tubers
                         
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                        • JWK

                          JWK Gardener

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                          Thanks @CanadianLori - as Harry says there is a big selection here and some very keen growers. I always grow a few as they are so easy from tubers. Whilst many people judge them on their flowers I also love the leaf shape and colour. I try and grow the really dark leaved varieties to compliment my tropical border.
                           
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                          • CanadianLori

                            CanadianLori Total Gardener

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                            Thank you @HarryS and @JWK I'll look out for tubers. My little flower gardens are such a mixed up medley that I'm not sure where I'd put them, but I always seem to find a space and I do have lots of containers too :)
                             
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                            • "M"

                              "M" Total Gardener

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                              Thank you for that link; it means there is hope for the ones I put in the ground last week :thumbsup:

                              I was quite put off growing them before, thinking they needed greenhouses/molly coddling.
                               
                            • CanadianLori

                              CanadianLori Total Gardener

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                              I bought some dahlia whatchamacallits yesterday. Some violet tones and yellows. Then I read the instructions - I didn't know that you have to take them out of the ground every fall. :doh: Guess these will go in pots.

                              Does anyone know what the smallest size pot is that I would need for one of these?

                              many thanks :)
                               
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                              • HarryS

                                HarryS Eternally Optimistic Gardener

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                                depends on the size of whatchamacallits . Some dahlias are very big.
                                 
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                                • JWK

                                  JWK Gardener

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                                  I leave mine in and they usually come back in the spring, depends on how cold/deep the frosts penetrate. With this recent lot I paid good money for I'll dig up in Oct/Nov time (after the first frosts have blackened the foliage), then the tubers are stored overwinter in poly bags with a little compost. They need to be somewhere cool, dark, dry and frost free.
                                   
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                                  • Linz

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                                    12 inches but like Harry said
                                    I find they dry out quicker then get blown over, being top heavy.

                                    Mines are going in the ground and pots, I pull up end of Oct, I don't wait for frost though and do as JWK says except wrap mine in last years xmas paper and label what name/colour they were.. check every few weeks for mould :blue thumb:
                                     
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