Germination temperature: 40 F - Do not plant seed potatoes until soil reaches 40 F. Days to emergence: 14 to 28 - Sprouts from seed potatoes should emerge in 2 to 4 weeks depending on soil temperature. Maintenance and care: Potatoes perform best in areas where summers are cool (65 F to 70 F), but are widely adapted.
Potato plants can't withstand hard frost and plants wither and die once temperatures are consistently over 100 degrees. Additionally, potato plants fail to set many tubers when nighttime temperatures remain over 55 degree.
