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Cosmos forest

JacquimcmahonJacquimcmahon Posts: 1,039
in Problem solving

Morning. I have a beautiful lush forest of cosmos..... but no flowers. Any idea how to encourage them to flower?

thanks for your help.
Marne la vallée, basically just outside Paris 🇫🇷, but definitely Scottish at heart.
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Posts

  • Hostafan1Hostafan1 Posts: 34,889
    patience
    Devon.
  • JacquimcmahonJacquimcmahon Posts: 1,039
    Just as well that I’ve got that then. I just seem to see them in flower everywhere else....
    Marne la vallée, basically just outside Paris 🇫🇷, but definitely Scottish at heart.
  • AnniDAnniD Posts: 12,585
    This seems to be a problem with cosmos -  every year there are comments about loads of lush foliage but no flowers. Could be too much nitrogen perhaps? 
  • TooeyTooey Posts: 95
    The flowers eventually turn up but I've had cosmos plants about 6ft tall before they flowered. They looked like Christmas trees!  :open_mouth:
  • JacquimcmahonJacquimcmahon Posts: 1,039
    Here they are. Tall and bushy with a couple of stray zinnia poking through.
    Marne la vallée, basically just outside Paris 🇫🇷, but definitely Scottish at heart.
  • B3B3 Posts: 27,505
    I think that the general consensus a couple of years ago was that they flower quicker if you keep them hungry. Poorish soil seems to encourage flowers. It's worked for me this year anyway
    In London. Keen but lazy.
  • JacquimcmahonJacquimcmahon Posts: 1,039
    That could be a good point. This was a new planter so I filled it with best compost, my other planters were a mix of old and new which could explain why I have flowers elsewhere.
    Marne la vallée, basically just outside Paris 🇫🇷, but definitely Scottish at heart.
  • LynLyn Posts: 23,190
    Definitely too much feed, or over rich soil.  I doubt you will get much from them, all energy into green.
    Annuals are best left hungry to trigger them into flowering and setting seeds. 
    Gardening on the wild, windy west side of Dartmoor. 

  • LandacaterersLandacaterers Posts: 1
    hi I have 4 cosmos I’m this row, 1 has not much foliage and lots of flowers almost gone over, and the others are all lush foliage and no flowers. I recently pinched the tops out with no change. Any ideas please??? 
  • JacquimcmahonJacquimcmahon Posts: 1,039
    Fickle plants. I’m on holiday now so perhaps the cosmos have miraculously burst into flower since I’ve been away.
    Marne la vallée, basically just outside Paris 🇫🇷, but definitely Scottish at heart.
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