Iris unguicularis Hardiness test

James Waddick
Sun, 12 Feb 2012 09:42:57 PST
Dear Friends,
	We have just had 2 nights where the temps went down to 6 F 
(-14 C) and yesterday barely made it up to freezing.  My Iris 
unguicularis has/had one flower open and 3 buds showing full color 
and emerged from their sheaths/bracts. The last two days had warm 
sun. I had covered the plant with a clear plastic bell jar for the 
first time, ever.

	Today the plant looks essentially unchanged, but the flowers 
and buds are totally frozen, collapsed and lost. So clearly the 
flowers cannot take this extreme, but the plant looks ok.

	So 6 degrees is too cold for the open and opening flower 
buds. I am hoping the more buds are deep within the plant's crowen 
and later buds will emerge and bloom unharmed. 	Stay tuned.

		Best		Jim W.

Dr. James W. Waddick
8871 NW Brostrom Rd.
Kansas City Missouri 64152-2711
Ph.    816-746-1949
Zone 5 Record low -23F
	Summer 100F +

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