Growing guide · Field crops

Potato

Solanum tuberosum

18,900 ha on farms (2025) and in most home gardens. Chitting, earthing up and rotation matter most.

Key figures

Item	Value	Source
Sowing / planting	chit 2–4 weeks; plant when soil is at least +8 °C	^[2]
Sowing depth	furrow about 10 cm	^[2]
Seed rate / spacing	20–30 cm in row, rows 50–75 cm	^[2]
pH	5.8–6.0 (Martat: below 6)	^[3][2]
Harvest	early potatoes 6–8 weeks after planting	^[2]
Storage	cure about a week at 12–15 °C, store at 4–5 °C	^[2]
Crop rotation	3–4 year rotation	^[2]

The full guide (care, pests, beginner and professional tips) is currently in Finnish. The figures above are the same and come from the sources below.

These are general guidelines. Always check the variety, seed packet or fertiliser instructions and current regulations.