In Okla. City, on March 25, 2013, the temp. dropped to 21 degrees, but it did not kill the Bradford pears, which were in full bloom. As a kid, I was taught that if the signs are right, blooming plants and trees can withstand a hard freeze. I saw it happen one spring when our blooming peach trees withstood a 22-degree freeze. My dad explained it with his Farmer’s Almanac. Does anyone know what the theory is?
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