Yes, potatoes can be planted in October, particularly in subtropical winter growing systems. According to FAO and CIP data, the Indian plains (including Uttar Pradesh, West Bengal, and Punjab) plant their main potato crop in October-November, with harvest occurring in January-February. There's also an early crop planted in September-October in these regions.
This October planting window works because potatoes are grown "in essentially every calendar month somewhere in the world" depending on local climate conditions. In subtropical regions like northern India, October represents the beginning of the favorable cool season when temperatures drop from the intense summer heat. The typical growing cycle in these Indian winter systems is 90-110 days, which is shorter than temperate systems due to the optimal winter growing conditions.
The key factor for successful October planting is having the right climate - specifically avoiding the extreme heat that inhibits tuberization. According to CIP research, night temperatures above 21°C prevent proper tuber formation, so October planting works well in regions where temperatures are cooling down from summer peaks. The optimal growing temperature range is 15-20°C daytime, which aligns with winter conditions in subtropical zones.
This contrasts sharply with temperate regions like Northern Europe, North America, and northern China, where planting occurs in spring (March-May) to avoid winter frosts and take advantage of the warm growing season before autumn harvest.