Table of Temperatures for Orchid Houses

Months. Warm House, East Indian.Cattleya or Intermediate House.Cool or Odontoglossum House.
Day. Night. Day. Night. Day. Night.
January 65-70 60 60-65 55 50-55 45
February 65-70 60 60-65 55 50-55 45
March 65-70 60 60-65 55 55-60 50
April 65-70 60 60-65 55 55-60 50
May 70-75 65 65-70 60 60-65 55
June 75-80 65 70-75 60 60-65 55
July 75-85 65 70-80 65 60-70 55
August 75-85 65 70-80 65 60-70 55
September 75-80 65 70-75 60 60-65 55
October 70-75 65 65-70 60 60-65 55
November 65-70 60 60-65 55 55-60 50
December 65-70 60 60-65 55 50-55 45

Degrees Fahrenheit. The higher day temperature should be obtained by sun-heat when possible.

Further remarks on this and other details will be found under the headings of the different genera, but it will be better now to state in general terms that during the season of active growth any reasonably high temperature by sun-heat, secured by keeping the house tolerably close and well shaded, greatly benefits the plants. This is specially noticeable where batches of Dendrobium nobile, D. Wardianum, and other deciduous Dendrobiums are grown. Those who grow them best allow the house containing the plants to become very warm; they remove the shading early in the afternoon in order to let the plants get the longest duration of light possible, and they keep the house very moist until the evening.