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Dividing agapanthus

peteSpeteS Posts: 963
When is the best time to divide and repot deciduous agapanthus...and will they flower this year after division. Mine are just starting to appear above the surface. Many thanks.


  • April is a good time to divide them. They flower best when potbound, so you may lose flowers for a bit, and any newly potted sections will probably take a couple of years to get into their stride.
  • PalustrisPalustris Posts: 4,220
    This is from the Burncoose Nursery site
    It is something of a popular fallacy that Agapanthus prefer to be pot bound or under potted. When the bulbs start to rise up out of the pot they, again, need splitting or potting on or both. Flowering will otherwise be sparse.

    They flower best of all when well fed and watered.

  • peteSpeteS Posts: 963

    Thanks for that Palustris...what an excellent nursery/website.
  • PosyPosy Posts: 3,601
    It can be quite a tough job, just getting them out of the containers and then cutting them into chunks. I find mine don't flower so well the first year but they soon get going and outgrow the containers again. They are absolute thugs.
  • Nanny BeachNanny Beach Posts: 8,622
    Now, and yes it is hard work, unlikely to get flowers this year. maybe not even next year either, though
  • PalustrisPalustris Posts: 4,220
    I split a clump here into four big pieces  when we moved here. They flowered that year and I expect they will flower this too. As I said, food and water.
  • LoxleyLoxley Posts: 5,423
    I'm going to do mine in a week or so, the hardest part is going to be getting the clump out of the pot, which is very large and vertical sided... I wasn't going to bother but it would be an even harder job next year. I sometimes wonder if it's worth it for a mere 2 weeks of flower.
  • PosyPosy Posts: 3,601
    Mine flower for much longer than that, @Loxley. They are in part sun - shady mornings, sunny afternoons and the flowers open over 2 - 3 weeks and last ages. I water them very generously and feed about once a week.
  • Hostafan1Hostafan1 Posts: 34,591
    edited April 2021
    IMHO, the main reason for non flowering is lack of watering / feeding of potted plant AFTER they flower. Like Daffs, they form their flowers underground and it's very easy to forget about them once they've finished flowering.
    I also think the whole " potbound " thing is a myth. They flower best when in the ground.
  • LoxleyLoxley Posts: 5,423
    Perhaps this year I'll be luckier, Posy. There are certainly a lot more crowns this year.
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