Paeonia lactiflora 'Karl Rosenfield'

paeony / peony

30% off selected peonies
2 litre pot
pot size guide
£14.99 £10.49 Buy
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5 year guarantee

  • Position: full sun or partial shade
  • Soil: fertile, moisture-retentive yet well-drained
  • Rate of growth: average
  • Flowering period: June to July
  • Hardiness: fully hardy

    Prized for their blowsy, glamorous blooms and glossy, deeply cut foliage, peonies are held in deep affection by many gardeners, despite their shortish flowering season and vulnerability to peony wilt in damp weather. It's easy to see why. From the promise of early spring, when their red, mottled shoots push through bare earth and the handsome foliage unfurls from spherical red buds, to early summer, when the huge flowers burst open, peonies exert a fascination that few can resist. 'Karl Rosenfield' has fragrant double flowers of startling magenta, from early to mid summer among deeply cut mid green leaves. The reddish-bronze foliage of this striking peony provides interest from early spring and after the plant has flowered.

  • Garden care: Deadhead after flowering. In early spring apply a top dressing of a balanced, slow release fertiliser around the base of the plant and mulch with well-rotted compost or manure. If the plant shows signs of collapse or the leaves become spotty, this may be a symptom of peony botrytis. Remove affected leaves immediately. In the autumn, cut off all the foliage and dispose of it to prevent reinfection the following spring.

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by PowerReviews
CrocusPaeonia lactiflora 'Karl Rosenfield'

(based on 1 review)

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(1 of 1 customers found this review helpful)



By Enoki

from London

Verified Buyer


  • Accurate Instructions
  • Attractive
  • Fragrant
  • Hardy
  • Healthy
  • Lightweight


    Best Uses

    • Garden
    • Outdoors
    • Patio

    Comments about Paeonia lactiflora 'Karl Rosenfield':

    Received delivery at work (colleagues admired it). Arrived with one flower (very fragrant) looking very healthy. Planted straight into garden. Hoping it will reemerge post dormancy this spring. Fingers crossed.

    • Your Gardening Experience:
    • Experienced

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    If so, click on the button and fill in the box below. We will post the question on the website, together with your alias (bunnykins, digger1, plantdotty etc etc) and where you are from (Sunningdale/Glasgow etc). We'll also post the answer to your question!
    9 Questions | 10 Answers
    Displaying questions 1-9
    • Q:

      My Karl Rosenfield peonies are thriving so well that the plant supports are struggling to cope. Should I thin out the shoots? Or divide the plants before next Season?
      Asked on 20/5/2015 by squirrel from Nottingham

      1 answer

      • Plant Doctor



        It would be a shame to cut it back now, but you could divide them in autumn or early spring next year.

        Answered on 27/5/2015 by Helen from crocus
    • Q:

      I have planted several paeonies in my garden. They have buds every year which are very small and never open. Have I planted them at the wrong depth or is there another reason?
      Asked on 19/4/2014 by Firefly from Bedfordshire

      1 answer

      • Plant Doctor


        Hello there
        It could be that they are planted too deeply or the area is too shady. But also prolonged periods of drought in the spring during the flower bud development can cause poor bud development and then the buds failing to open. I would mulch around the base of the plant and make sure that they are watered during prolonged periods of dry weather.
        Hope this helps

        Answered on 22/4/2014 by Anonymous from crocus
    • Q:

      Can I improve my soil enough to grow peonies successfully?
      I have extremely well drained, sandy soil in my garden and have read that peonies prefer moisture retentive soil. What is it best to add to make conditions ideal for this amazing plant? I have a lot of bought compost available to use, would it be good enough for the job. I don't make my own compost.
      Asked on 7/7/2013 by Jan Tyler from North East London

      1 answer

      • Plant Doctor



        Paeonias prefer a relatively moist, but freely draining soil, so it should be possible to enrich your soil and grow them in sandy conditions. If you do not have your own compost, then I would buy composted farmyard manure and dig in a couple of bags before you plant. This will not only increase the nutrients, but will also help the soil retain moisture. Afterwards, you can apply this as a generous layer of mulch each autumn. You may need to keep an eye on the watering, particularly in warmer weather, but you should find that they will flourish.

        Answered on 9/7/2013 by Helen from Crocus
    • Q:

      Growing plants for a wedding

      Dear Crocus, I am a very happy customer ..... I love your site, plants and service. I learnt about you first from Arabella Lennox-Boyd. But now I am writing for some advice please. My sister is getting married in Oxfordshire on the last weekend of May. I would love to grow the flowers for the wedding. I have a big garden with empty beds and a green house at my disposal. Could you give me some advice on types of cut flowers that would be in bloom at the end of May? Some pointers as a place to start my research and buying would be fantastic. Thank you very much, Best wishes, Kate
      Asked on 8/1/2010 by Kate Olivia Higginbottom

      2 answers

      • A:

        Hello Kate, It will be a little hit and miss as a lot will depend on the weather, but the following plants should be in flower around that time. Choisya ternata
        Osmanthus x burkwoodii
        Viburnum x carlcephalum
        Convallaria majalis Iris Paeonia Euphorbia palustris
        Ceanothus Skylark
        and if we have a hot start to the summer a couple of roses or some of the earlier lavenders may have started too. I hope this gives you lots of ideas. Helen Plant Doctor

        Answered on 8/1/2010 by Kate Olivia Higginbottom
      • A:

        Thank you so much Helen - amazing! I'll send you photos of the finished results. Best wishes and thanks again, Kate

        Answered on 8/1/2010 by Crocus Helpdesk
    • Q:

      Planting Peonies

      Hi, I received my RHS garden magazine a few days ago and I am interested in the Peonies. I just have a question regarding Peonies - if I buy them now when is the best time to plant them? Regards Giovanna
      Asked on 22/10/2009 by Giovanna

      1 answer

      • A:

        Hello Giovanna, Ideally these should be planted as soon as you receive them into fertile, moisture-retentive yet well-drained soil in full sun or partial shade. I hope this helps. Helen

        Answered on 22/10/2009 by Crocus Helpdesk
    • Q:

      Paeonias starting to look bit unwell- are they ok?

      Hi, I ordered some Paeonias in April.....of the four that I bought I am bit worried as to me thye don't look very healthy. Would you be able to give me some advise please? Are they Ok? Thanks and with kind regards
      Asked on 26/9/2009 by Maria Hagbro

      1 answer

      • A:

        Hello there, These plants are starting to die back now and this is a natural part of their life cycle. The leaves will continue to deteriorate in autumn and disappear altogether in winter, then in the Spring the plants will put on lots of new, lush growth. Best regards, Helen Plant Doctor

        Answered on 28/9/2009 by Crocus Helpdesk
    • Q:

      Help with leaf problem on my Paeonia please

      Hi, I bought a Paeonia lactiflora 'Adolphe Rousseau' and have potted it into a large container with (washed) gray slate covering the soil. For some reason the leaves are being eaten away at an alarming rate, with scarred, brown lines throughout. I have looked at the 'blight' disease but they look eaten rather than blotchy. Any Ideas, help please!? Yours, Will
      Asked on 23/7/2009 by W Bone

      1 answer

    • Q:

      Can I divide my Peonies?

      Could you please tell me what to do with my Peonies, now that they've finished flowering. I would like to move and divide them if possible, as they have outgrown the space where they were first planted. Thank you Val
      Asked on 14/6/2009 by david gregory

      1 answer

      • A:

        Hello Val, Herbaceous Peonies, should be left until they have died back and then lift and divide them in the autumn or early spring. I hope this helps.Helen Plant Doctor

        Answered on 15/6/2009 by Crocus Helpdesk
    • Q:

      How do I look after my Paeonies?

      I have two newly established Paeonies (2nd year - still no flowers) and the leaves have now turned brown. Am I meant to prune them? Is there any other advice regarding their general care?
      Asked on 8/11/2005 by Bets Ingram

      1 answer

      • A:

        Paeonies can take a few years to establish and produce flowers, so I would not be too despondent. As for general care instructions, it all depends on what type of paeony you have - a tree paeony or a herbaceous type. If your paeonies still have a woody stem at this time of year then they are more than likely tree paeonies. The herbaceous paeonies die right down, so any foliage now would have collapsed due to the frosts The later need very little care. Do not prune the plants at all, but remove the dead foliage in autumn to tidy them up. In early spring apply a balanced slow-release fertiliser around the base of the plant and mulch with well-rotted compost or manure. If you have a tree paeony, you will need to treat it a little differently, but you will still need to remove the dead leaves, making sure the remaining stem remains intact. Depending on the size of the plant you have bought, they can take up to to four years to start flowering after planting. Sometimes a newly planted tree peony will appear to make very little growth in its first season, but all its activity happens underground as its energies are going into producing a good root system. Providing the foliage looks reasonably healthy, there is nothing to worry about and this may just be a 'settling in' period. Occasionally the main stem may die back a little. This might be a little worrying, but wait until the following spring when vigorous growth should resume from the lower part of the stem or even from below soil level. Tree peonies are heavy feeders and they respond well to a generous, early autumn top dressing of blood, fish and bone, a slow release organic fertiliser. Its high potash content encourages flowers to develop. A light sprinkling of a general fertiliser such as Growmore can be applied in the spring if you wish. They also respond well to pruning. Ultimately you should aim for a broad, multi-stemmed shrub of up to 120-150cm in height, which will not need staking. Chinese and American types have a naturally branching habit and will need less regular pruning than the Japanese and French types. While the plant is still young, don't be tempted to prune, apart from removing dead wood during the first two years to help get the plant established. After this if your plant forms a good shape, no regular pruning is needed. However, if your plant has few stems and is poorly shaped, then prune hard in late winter or early spring, just as the growth buds are swelling. This may mean that you sacrifice some flowers in the coming year. If this is a big issue, you can also prune it directly after flowering but the regrowth will be slower.

        Answered on 9/11/2005 by Crocus
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