[garinda]

Climate plays a deciding role when determining the appropriate planting time. Newly planted trees do best when exposed to moderate temperature and rainfall and they need time to root and acclimatize before the onset of intense heat and dryness of summer or the freezing temperatures of winter.
Spring and early fall, therefore, are generally the best planting seasons (depending on your location) with spring preferred over fall in the more northerly latitudes. In the southern United States, however, which does not experience an intense winter, planting can take place during the winter months.


So minus six, on a cold November day, was probably not the wisest time to plant them.