Re: Re: iris disease or virus

Joanna, you have given a good description of the pineappling syndrome.  I have a lot of trouble with it.  I heard Bill Mariot give a talk on iris diseases a few years ago in which he said that it is not a disease but a climatic effect.  It is only known in hot areas of the country.  Some irises are extremely affected by it while others never seem to have it.  I am studying ways to minimize it in my garden, so far without much result.  I have five separate beds, and the one that got the most water last year had the least pineappling; the one that got irregular watering had the most.  Stress combined with heat seems to increase it.  I'm still working on it.
Francelle Edwards in hot Glendale, AZ where we are having a last refreshment of cool weather.
----- Original Message ----- 
  From: joanna.varner@tdi.state.tx.us 
  To: iris-talk@yahoogroups.com 
  Sent: Friday, April 06, 2001 8:23 AM
  Subject: [iris-talk] Re: iris disease or virus


  Good morning! I am new to this list and hoping for a little help or 
  direction.  I have been growing several different iris for a couple of 
  years now and have had to deal with odds and ends of disease (crown 
  rot and the like) without too much trouble.  I have 3 plants which 
  have developed odd looking leaves, very clumpy and spiky, rather than 
  the elegant fan that iris usually develop.  The leaves are so 
  tightly packed together that they are litterally ripping as they 
  attempt to seperate.  The blooms stalk fails to grow and the 
  bloom is happening in the middle of the leaf mess. Ick!  Today I 
  learned of a virus called pineapple virus which I am guessing is what 
  these plants have since the leaves look like pineapple leaves.  Is 
  there a treatment, or do I need to eradicate these iris and the ground 
  they were in?  I have been unable to find a quick reference, and my 
  local library Iris tombs have little if anything on the diseases of 
  these lovely plants.  Help!  Please!!  The rest of my iris are happily 
  getting ready to bloom if not already blooming.  Will this problem 
  spread?  Is there a vector? Suggestions for a GOOD iris book with 
  photos of the various diseases and descriptions of the appropriate 
  treatments would be welcomed.  Any assistance will be greatly 
  appreciated.
  Thank you.
  Joanna Varner
  Round Rock, TX


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