Purple Peruvian

Family: Solanaceae Root Vegetable

Planting Schedule

Provide your location or planting zone to unlock dates and add Purple Peruvian to a garden.

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.

Light: Full SunMaturity: 90 DaysHabit: Clumping

Botanical illustration of Purple Peruvian

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Purple Peruvian Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Direct Sow	May 25th	Aug 23rd – Aug 29th
Zone 2b	Direct Sow	May 15th	Aug 13th – Aug 25th
Zone 3a	Direct Sow	May 15th	Aug 13th – Sep 1st
Zone 3b	Direct Sow	May 19th	Aug 17th – Sep 21st
Zone 4a	Direct Sow	May 15th	Aug 13th – Sep 24th
Zone 4b	Direct Sow	May 13th	Aug 11th – Sep 27th
Zone 5a	Direct Sow	May 8th	Aug 6th – Sep 30th
Zone 5b	Direct Sow	May 4th	Aug 2nd – Oct 5th
Zone 6a	Direct Sow	May 1st	Jul 30th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jul 24th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jul 19th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	Jul 9th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	Jun 30th – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	Jun 21st – Nov 12th
Zone 9a	Direct Sow	Mar 6th	Jun 4th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	May 10th – Dec 9th
Zone 10a	Continuous Production
Zone 10b	Continuous Production
Zone 11a	Continuous Production
Zone 11b	Continuous Production
Zone 12a	Continuous Production
Zone 12b	Continuous Production
Zone 13a	Continuous Production
Zone 13b	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

Culinary Notes

Chef's Note

Purple Peruvian’s purple flesh cooks up creamy and cohesive rather than grainy, so it holds its form in thick slices and doesn’t muddy into the starch. Use it where you want color plus a gentle earthy sweetness—roast or purée, then finish with something bright like lemon or a slick of crème fraîche.

Best Uses

roasting whole or in thick wedges so the creamy center stays intact
mashed potatoes or purées where the color reads vividly on the plate
thick slices for gratin or sheet-pan bakes that hold shape
sous-vide/steamed then smashed for crisp edges and a soft middle

Flavor Profile

earthy-sweet, slightly nutty creamy-tender bite when cooked jewel-toned interior that stays cohesive light vegetal savor with a rich, roasted finish

Kitchen Pairings

brown butter parmesan sour cream or crème fraîche black pepper fresh dill lemon

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.