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Potato

What Plant Yet? knows about potato, and where each number comes from. For today's answer, pick your town.

Planting numbers

Frost category

Semi-hardy Source: Colorado State University Extension

Plant outdoors

From 2 weeks before typical last frost up to the frost date Given for semi-hardy crops as a group. Source: Colorado State University Extension

Grows once daytime temperatures reach

40°F Given for semi-hardy crops as a group. Source: Colorado State University Extension

Days to harvest

125 Source: Colorado State University Extension

Left out because we found no university extension source for it: minimum night temperature, cold-damage temperature. We don't estimate.

Growing tips

• Plant four inches deep once morning soil temperature is above 50°F. (Colorado State University Extension)
• Start with certified seed potatoes to reduce disease. (Colorado State University Extension)
• Hill soil around plants within four weeks of planting. (Utah State University Extension)
• Watch for yellowing in August; running out of nitrogen is the most common problem. (Colorado State University Extension)
• Keep moisture even: soggy soil rots tubers, dry soil makes them knobby. (Colorado State University Extension)

How the answer uses this

The planting window opens 2 weeks before typical last frost up to the frost date in your town and stays open while a planting still has 125 days to mature before the typical first fall frost. No source gives a cold limit for potato, so it never gets a Plant answer — only its dates.

Sources

• Colorado State University Extension — checked Nov 11, 2026
• Colorado State University Extension — checked Nov 11, 2026
• Utah State University Extension — checked Nov 11, 2026

Guidance only. Extension advice is written for typical conditions; your soil, variety and microclimate matter.