Amaryllis Trouble

Jim lykos
Wed, 31 Oct 2007 23:16:14 PDT
HI Linda and Ron,

I have a similar Hippeastrum winter response to that mentioned by Ron.  I think the reference to Veronica Reed stated that Hippeastrum hybrids are evergreen and dont require a dormancy was an incorrect interpretation. Her Hippeastrums are grown in heated glasshouses maintained at 59-81F (15-27C) during the year. At these temperatures a few leaves will remain on Hybrids during winter but they are still in a dormancy state with no new growth.  She states in her book on page 197 that in the cold months of October to February,  Hippeastrum breeders provide for dormancy of 10 to 12 weeks at 45-46F, while others allow for a dormancy of 6 to 8 weeks at 55F.
In chapter 10 on commercial breeding she mentions that mature bulbs are lifted from July - August and dried for 10 to 14 days at 77-86F. They are then given a hot water treatment to eliminate fungal or insect infestation/eggs, dried again for 3 days and then stored at 55F for 8 to 10 weeks.

Has anyone tried the "hot water treatment"?  What were the results?

Jim Lykos 
Blue Mountains Zone 9b

  ----- Original Message ----- 
  From: Ronald Redding 
  To: Pacific Bulb Society 
  Sent: Wednesday, October 31, 2007 6:28 AM
  Subject: Re: [pbs] Amaryllis Trouble

  >Hippeastrum hybrids are evergreen and do not require a resting period.
  If everything that you read is true then Veronica needs to tell the over 100 different cultivars I have here in zone 10b that they should not be going dormant over winter and must keep their leaves. Unless my sub to full tropical climate is too cold for them? Kind Regards and Best WishesRon ReddingHervey BayAustralia
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