[OGD] surviving the cold in Florida (US)

  • From: viateur.boutot@xxxxxxxxxxxx
  • To: orchids@xxxxxxxxxxxxx
  • Date: Sun, 31 Jan 2010 10:43:46 -0500

"Martin Motes, of Motes Orchids in the Redland, advises growers on how to 
deal with damaged orchids.

The recent... prolonged South Florida bout of cold has put exceptional 
stress on many orchids in exposed settings.
Orchids that have proper nutritional levels have a better chance to 
withstand this stress.
The standard is the Michigan state formula of low phosphorus, lower 
nitrogen and additional magnesium.

Growers who have not been using this or a similar formula may see a 
dramatic reddening of the foliage of their orchids.
The cure is one tablespoon of Epsom salts (magnesium sulfate) per gallon of 
water, given weekly until the red disappears.

Add one tablespoon of potassium nitrate to the mixture to supply the proper 
low level of nitrogen.
This combination can be substituted for regular fertilization for the 
duration of the winter.
Orchids that have been protected from the cold by running water overnight 
are almost certain to have had nutrients leached from their roots.
They should be fertilized weekly to restore proper growth."

URL : http://www.miamiherald.com/living/home/story/1451123.html



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