Boreal :*Cold temperate with cool summers and long winters :*Evergreen, frost-hardy, needle-leaved forest ( taiga ) :IX. Source: Internet
It is frost-hardy and produces crops of 30 tons per hectare at a height of convert above sea level. citation The cultivar T. tuberosum lineamaculatum 'Ken Aslet' has gained the Royal Horticultural Society's Award of Garden Merit. Source: Internet