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Since the 1950s and early 1960s, 90% of Kentucky bluegrass seed in the United States has been produced on specialist farms in Idaho, Oregon and Washington. During the 1990s [citation needed] botanists began experimenting with hybrids of Poa pratensis and Texas bluegrass (P. arachnifera), with the goal of creating a drought and heat-resistant ...
It is known as the "Bluegrass State" in reference to Kentucky bluegrass, ... In January the mean maximum temperatures range from 36 to 44 °F (2 to 7 °C); the mean ...
Kentucky bluegrass (Poa pratensis) is the most extensively used cool-season grass used in lawns, sports fields, and golf courses in the United States. [14] Annual bluegrass ( Poa annua ) can sometimes be considered a weed.
Klotter, James C. and Daniel Rowland, eds. Bluegrass Renaissance: The History and Culture of Central Kentucky, 1792–1852 (Lexington: University Press of Kentucky, 2012), Raitz, Karl, and Nancy O'Malley, "The Nineteenth-Century Evolution of Local-Scale Roads in Kentucky's Bluegrass," Geographical Review , 94 (October 2005), 415–39
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Temperatures in Kentucky usually range from daytime summer highs of 87 °F (31 °C) to the winter low of 23 °F (−5 °C). The average precipitation is 46 inches (1,200 mm) a year. [6] Kentucky has four distinct seasons, with substantial variations in the severity of summer and winter. [7]
The Rhizoctonia species thrives in temperatures ranging from 70 °F to 90 °F but can survive in freezing temperatures. [3] Brown patch is most common when night temperatures fail to drop below 68 °F and during extended periods of high humidity or prolonged leaf wetness. [5]
Extreme temperatures range from −21 °F (−29 °C) on January 24, 1963, to 108 °F (42 °C) on July 10 and 15, 1936. ... The Festival of the Bluegrass, Kentucky's ...