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Suspected Crown Rot with my Rheum Palmatum

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Question from Stephanie Hill

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Hi,
leaves on my Rheum Palmatum are turning yellow and Redon patches. new leaves are yellowed and growth has slowed overall. should I lift it, add grit to the soil & replant or it it too late? Also unidentified insect (see photo) has appeared on underside of leaves. I have picked these off - are they bad for the plant?
Thanks

  • Views: 909
  • Replies: 2
  • Posted: Tue. 5th June 2012 19:30

Re: Suspected Crown Rot with my Rheum Palmatum

Reply from ELAINE HUTSON

They need to be divided every few years, the old crowns thrown out and the strong crown re-planted, they are heavy feeders and require a lot of water.

  • Posted: Tue. 5th June 2012 22:38

Re: Re: Suspected Crown Rot with my Rheum Palmatum

Reply from Stephanie Hill

many thanks Elaine. The only thing is I bought the plant around October last year from a good nursery so it's not that old. I have mulched itvwith garden compos and fed it with a seaweed liquid feed but the leaves have red blotches and the yeollw seems to ro be spreading. I can't seem to upload any photos which is a shame but thank-you again for taking the time to reply. If it does survive. Will divide as it gets older.

  • Posted: Wed. 6th June 2012 21:18