Novice23Novice23 East SussexPosts: 75

Have some beautiful red Crosmosia.  Now I know some people think they are weeds, but I love them.  Problem is there are getting very thick.. Can I divide them like other perennials, and if so when would you suggest I do this.  I can just cut down last years growth, as the birds like to hide in them, and the new shots are already showing through.  I assume dividing will also encourage more flowers, is that right?



  • fidgetbonesfidgetbones Posts: 11,270

    If you dig them up and separate them,the new bulb will be at the top. Old bulbs below that can be thrown away A congested clump will have chains of bulbs, only the latest years will flower.  When you replant them,give the soil a handful of fertiliser and/or compost and space them a few inches apart.

    It's not a mess, it's a nature reserve.
  • Hi Novice23, like you I love the Crocosmia and Lucifer is my favourite standing a good 3ft tall and a brilliant red.  I always split mine in the spring - March/April time but it depends where you live. Mine aren't showing through yet so perhaps I live further north than you!  I remove some of the old bulbs and this then leaves room for more bulbs to form, and thus giving you more fresh flowers to form. Good luck!

  • Crocosmia grow from corms, and each year a new one develops on top of the old. If you dig them up you will find layers of corms. The topmost ones will be flowering size, so just twist them off and replant . You should also be able to grow on some of the older ones if you want more plants, so choose the best, separate and plant elsewhere. Throw out or give away any you don't need, they will take over your garden if you try to compost them! 

    You do need to feed crocosmia or they can be shy to flower, so add lots of homemade compost when you replant.

  • Snap, fidgetbones!

  • fidgetbonesfidgetbones Posts: 11,270

    That reminds me, i have some Lucifer to split up.image

    It's not a mess, it's a nature reserve.
  • higgy50higgy50 Posts: 184

    Despite popular belief Crocosmia actually come from a wet part of Africa where they get a lot of rain and therefore they like a good drenching. With our current weather this won't be of a lot of interest I'm sure, but but well worth keeping in mind if you get a dry spell or hot summer again. If it is dry when you divide them in the Spring add a good helping of rich compost and keep very well watered. I have found this works well.



  • The long, strappy leaves are quite strong & useful for temporary tying in of climbers.

    I have also used them for wrapping ad hoc Christmas wreaths and the like.

    I suspect I'm not the only one who just pulls the leaves firmly out without bothering about a spade!
  • Novice23Novice23 East SussexPosts: 75

    Well thank you all for such a quick response.  So glad I can keep my Crocosmsia and contain them.  I will divide and take out the old bulbs and hopefully get more flowers next year.   Thanks for the tip about watering higgy50, but I don't think that is a problem at the moment.   Sandranne I am in Sussex, where is it still wet, but quite warm, so most of my spring bulbs are showing, now.   

    Thanks again everyone for your help and advice. 


  • BerkleyBerkley Posts: 331
    I've found this thread really interesting - and can't wait for Spring to come, so that I can divide my Lucifers......I think I'll just replant the top corms and add good compost. But I'm wondering how deep I ought to plant them. I remember reading somewhere that it was quite important - but can't remember what the advice was!
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