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Old 11-07-2013, 10:39 AM
agrostis agrostis is offline
LawnSite Silver Member
Join Date: Nov 2009
Location: Winston-Salem NC
Posts: 2,098
I think it is because of the slightly different height's of the grass itself reacting to the frost. 1/8" can make a big difference in temperature in the first 6" above ground level.
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