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Sowing cosmos

Dirty HarryDirty Harry Posts: 1,048
edited March 2021 in Plants
Looking to sow some to start off inside today but haven't done it before.

Can they be sown in a seed tray then pricked out into individual pots or are they best to sow into small pots/cells to start with?


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Posts

  • Hostafan1Hostafan1 Posts: 34,889


    I sowed these on the 13th of March. 
    Devon.
  • Pete.8Pete.8 Posts: 11,340
    I start mine in seed boxes then transplant into 6-pack modules then either plant or move them into pots

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • AnniDAnniD Posts: 12,585
    I don't think it really matters too much. I start mine off in seed trays. 
  • B3B3 Posts: 27,505
    They're not fussy. A good one to start with. Make sure they have plenty of light when they sprout but don't bake them.
    In London. Keen but lazy.
  • Dirty HarryDirty Harry Posts: 1,048
    Glad to hear. Will see what trays/small pots I have spare.

    Will need to watch on the light levels, re-did the conservatory somewhat last year and removed the manky old blinds- potential for serious baking sunshine if I'm not careful.
  • CrazybeeladyCrazybeelady Posts: 778
    Mine already have flower heads formed  :# think I sowed a bit too early!
  • Dirty HarryDirty Harry Posts: 1,048
    Had one tray with 20 cells and enough spare 3.5cm pots in the end so that'll save me pricking anything out. Just hope I don't inadvertently fry them. 
  • LynLyn Posts: 23,190
    Crazybeelady said:
    Mine already have flower heads formed  :# think I sowed a bit too early!
    If they were mine I would pick those buds off now, and bring on a bigger plant. 
    Gardening on the wild, windy west side of Dartmoor. 

  • punkdocpunkdoc Posts: 15,039
    Me too @Lyn
    How can you lie there and think of England
    When you don't even know who's in the team

    S.Yorkshire/Derbyshire border
  • ddo101ddo101 Posts: 31
    Pete.8 said:
    I start mine in seed boxes then transplant into 6-pack modules then either plant or move them into pots
    That's what I did last year.  Unfortunately in my case, once I hardened them off in May and planted them out they got absolutely massive (I pinched out to get them bushy) but only a tiny fraction bloomed.  And the few that did not until late September!  They were in a very sunny spot and I didn't feed with high nitrogen.  But perhaps it was the soil (though same situation in different parts of the garden).  In the end, it was a lot of work without much reward.  One could have mistaken them for invasive weeds ;P
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