Dorchester, Wisconsin. Dorchester is a village in Clark and Marathon counties in the U.S. state of Wisconsin, along the 45th parallel. It is part of the Wausau, Wisconsin Metropolitan Statistical Area. The population was 876 at the 2010 census. Of this, 871 were in Clark County, and only 5 were in Marathon County.
Petunias have a base temperature of about 39 degrees F and are considered cold tolerant; however, freezing temperatures can kill petunias because the plants' cells need the sun's energy for photosynthesis.nce petunias have endured frost or freeze injury, there is not much you can do to save the plant. At times, frost-injured plant parts can be cut back, and plants may outgrow the damage. Petunias can survive the light frost of southern climates, as petunias will come back in the spring following a hard freeze.
Plant injury and death can occur with prolonged exposure to temperatures below T min or above the maximum temperature (T max; the temperature at or above which the flowering rate is zero) from irreversible damage to the photosynthetic apparatus and cell membranes (Lie and Huang, 2000 and Raison et al., 1980).lant injury and death can occur with prolonged exposure to temperatures below T min or above the maximum temperature (T max; the temperature at or above which the flowering rate is zero) from irreversible damage to the photosynthetic apparatus and cell membranes (Lie and Huang, 2000 and Raison et al., 1980).