Vegetables · perennial grown as an annual

Potato from seed

Solanum tuberosum · also searched as growing potatoes from seed

Minimum soil temperature: 45°F (7°C)
Sowing depth: about 4 in (10 cm), per CSU's table
Light: Cover the seed; darkness helps
Before sowing: Potatoes are grown from seed potatoes, not seed. Chitting (sprouting in light) is optional.
Sow outdoors: 4 to 2 weeks before the last frost
Spacing: 12 to 15 in (30 to 38 cm)

Your dates from your last frost Seed not coming up?

Potatoes are propagated by tubers. CSU gives only the minimum soil temperature and days to harvest.

Sowing

Plant certified seed potatoes (small tubers or cut pieces with eyes) once soil is workable and at least 45°F (7°C). True botanical seed from the berries exists but gives variable plants and takes an extra season.

Care and transplanting

Hill soil around the stems as they grow. Keep tubers covered so they do not turn green.

Problems

Green tubers are toxic and come from light exposure; bury or discard. Plants dying early is normal at maturity (about 125 days in CSU's table).

Saving seed

Save small, healthy tubers for next year only if your plants were disease-free; buy certified seed potatoes otherwise.