submitted by Mohyuddin Mirza (January 2012)

With the cold weather we have been having, a few issues are emerging which need attention. With outside temperatures below 30C and wind over 20 miles/hour several issues can emerge in the greenhouse:

• The obvious one is cooler temperature inside the greenhouse and cold spots along the perimeter. Twenty four (24) hours average temperature may drop below the set point and that will cause vegetative crops. A purple color on leaves, thickening of stems and yellowish green color is an indication of temperature dropping to about 12C. Look at the picture:

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