Purple Peruvian

Potato

90d to harvest

Velvety purple skins with a jewel-toned interior—Purple Peruvian delivers a striking, earthy sweetness and a creamy, tender bite when cooked. The flesh turns richly colored and stays beautifully cohesive, making it a standout for roasting, mashing, and vivid purées, as well as for striking slices that hold their color in hearty dishes. Grow it for the sheer delight of harvesting potatoes that look as remarkable as they taste—deeply colored, reliably productive, and garden-worthy from first hill to final lift.

Crop Dates

Growing note: Frost-free Zone 11b supports continuous outdoor production.

Milestone	Date
Climate	Frost-Free Climate
Growing Approach	Continuous Production

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Clumping
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	60
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Frequently Asked Questions

What pest or disease is most likely on Solanum tuberosum (Purple Peruvian), and how do I treat it?

Late blight is a common, devastating disease for potatoes (Solanum tuberosum), showing as dark, water-soaked leaf spots that expand quickly—often after humid weather. Remove and destroy infected leaves promptly, avoid overhead watering, and improve airflow by spacing plants; if the problem is spreading, use a labeled late-blight fungicide and follow the label timing. For pests, keep an eye out for Colorado potato beetles; hand-pick adults and larvae early, and treat with a product labeled for Colorado potato beetles if populations build.

How often should I water Purple Peruvian potatoes during the main growing phase?

During active growth and tuber bulking (roughly after plants are established until about a few weeks before harvest), keep soil evenly moist but never soggy—aim for about 1 inch of water per week, adjusted for heat and rainfall. Water deeply so moisture reaches the root zone, and only when the top 1–2 inches of soil start to dry to prevent tuber rots. Consistent moisture helps tubers size evenly; letting the soil swing between very wet and very dry can reduce yield.

How can I tell when Purple Peruvian potatoes are ready to harvest?

Harvest when plants start to yellow and die back, typically around 90 days from planting for Purple Peruvian. To confirm, gently dig one or two plants and check whether tubers have set skins that rub off only lightly (not peeling easily). If you expect wet weather, harvest promptly after the tops die back to reduce rot risk.