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Dierama drama?

Tanty2Tanty2 Posts: 219
Hi - I'm thinking about frothing up a sunny border with some Dierama Pulcherrimum - has anyone grown any and can advise, please?  I know they produce tons of seed but do they self seed around and start popping up everywhere?  Thanks :)


  • Hostafan1Hostafan1 Posts: 34,053
    I'v had them self seed , but not old enough to flower yet. I find the plants aren't very long lived .. Maybe it's just my garden?
  • JennyJJennyJ Posts: 8,876
    Mine hasn't yet, and I have light soil that is generally very hospitable to self-seeders.
    Doncaster, South Yorkshire. Soil type: sandy, well-drained
  • Tanty2Tanty2 Posts: 219
    Thanks both.  I've never grown Dierama before but figured it would look super pretty in with some agapanthus.  I love a plant that doesn't need pruning or much maintenance but sometimes they're trouble in other ways :)
  • chickychicky Posts: 10,379
    Mine’s doing well now, but took ages (about 5 years) to get established and start flowering you might need some patience 🙄
  • BobTheGardenerBobTheGardener Posts: 11,391
    Agree, seeding around is generally not an issue.  I've found they don't like extremes at the roots though and have lost a couple, one in heavy clay (too wet in winter) and one I planted in a large container which got too dry in one of the droughts we had in the East of the country.
    A trowel in the hand is worth a thousand lost under a bush.
  • BenCottoBenCotto Posts: 4,290
    Dierama have that annoying characteristic of being semi evergreen. In other words they don’t spend five months of the year underground and out of sight, nor do they robustly stand up to anything a British winter throws at them. No, from November to May they hang around looking shabby and down at heel. But the flowers are beautiful and thus I forgive them.

    This photo was taken in 2019 after the plant had been in the ground for 2 years. This summer I am expecting there to be 20+ ‘fishing rods’.


    Rutland, England
  • Tanty2Tanty2 Posts: 219
    Thank you so much for this!  I agree it's sad about the whole shabbiness out of season but I'm sort of used to that with the apparently self-mulching brunnera over the winter too :)
  • SophieKSophieK Posts: 242
    I seeded a tray of Dierama for the first time this year. They're undercover, they sprouted but I know it's a patience game with them. I might be tempted to buy some mature ones until mine finally flower.
  • Dieramas are lovely. They like dry winters and wet summers, not my local weather, they come from the plains of South America, down here in Cornwall they seed themselves fairly prolifically in gritty soil. Easy enough to weed out. They take about 3/4 yrs to reach flowering size. I have found they look OK if I stir myself in the autumn to remove any dead growth, leaving the greenery untouched. There is a local radio gardening expert in Helston who does not seem to be able to grow them despite trying for years. My soil is thin and gritty, bulked up with multi purpose compost and most of my dieramas are growing in a bed surrounding a small pond so get a lot of surplus rain water.
    I think they like quite a damp growing area, dryness seems to kill them off as I had mine in pots growing on to flowering size and they were not happy at all.
  • I have been very lucky with our dieramas - I was given one in a pot about ten years ago, it has since been divided several times (once with a saw it was so solid!) and I have 3 in the ground as well as the one in the pot. They all flower prolifically every year, even after splitting which they shouldn't!! We have clay soil here so everything that the rules say to make them work, we have the opposite however they seem to love it!! very odd!! 

    Dolce far niente....
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