SproutSmart
SproutSmart™ Intelligent Garden Sowing

Purple Peruvian

Potato
Zone 1b Save Garden

Planting Schedule

Add Purple Peruvian to your garden to build a schedule and get reminders.
Botanical illustration of Purple Peruvian
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: Zone 1b has only 61 frost-free days — shorter than this crop's 90-day maturity. Outdoor planting is not viable; use protected cultivation.
MilestoneDate
Last FrostJun 1st
Growing ApproachProtected Environment Only

Crop Details

TraitValue
Days to Maturity90
Sun RequirementsFull SunFull sun
Growth HabitClumping
Support NeededNone
Planting DepthNormal
Germination Temp (°F)60
Min Soil Temp (°F)45
Min Night Temp (°F)28
Harden Off (days)Not Required

Today's Conditions

Wait until soil reaches at least 45°F before transplanting Purple Peruvian.

Garden Alerts

Zone 1b has only 61 frost-free days — shorter than this crop's 90-day maturity. Outdoor planting is not viable; use protected cultivation.

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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.
Botanical illustration of Purple Peruvian

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.

Today's Conditions

Wait until soil reaches at least 45°F before transplanting Purple Peruvian.

Garden Alerts

Zone 1b has only 61 frost-free days — shorter than this crop's 90-day maturity. Outdoor planting is not viable; use protected cultivation.

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 45°F for reliable germination and early growth.

Expert Note

Plant certified seed potatoes 1–2 weeks after the last spring frost when soil is workable, and hill as plants grow to protect developing tubers from light.