To quote Yin-Tung Wang,
"The ideal day/night temperature range for spiking is
77F/68F. (snip) It takes three to six weeks for Phalaenopsis to
spike under inductive temperatures. Well established clonal
plants spike more uniformly. My research shows that during this
period an adequate light level must be maintained or plants will not
spike."
At 12:00 PM +0100 3/16/06, [EMAIL PROTECTED]
wrote:
Message: 5
Date: Wed, 15 Mar 2006 22:56:28 -0600
From: [EMAIL PROTECTED]
Subject: [OGD] chilling phals
To: Orchids@orchidguide.com
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1
quoting Iris:
"The conventional wisdom is that if you chill most Phals for a period of two
weeks, they will bloom 120 days later. According to this, if I want my Phals to
bloom for our orchid show in mid-October, I have to put them on a chilling
regimen around Memorial Day. Now there may be no natural chilling available at
that time, unless we have some cool weather. I understand it has to go below 59
deg. F. I can't turn on the air conditioning in just one room. If it doesn't
go below 59 outdoors, can I put my Phals in the refrigerator overnight
(34-40)? Put ice cubes in the pot? Any other ideas?"
Dr. Wang did some phal chilling tests. Indication of testing was a drop in
night temps some 25 degrees F lower than daytime temps, as my poor mem recalls.
Lower temp of 50-55 with daytime around 80. Chill time limited to around 12
hours in dark, then warm in daylight period. But your 34-40 seems a bit too cool.
Doug
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