White Rose

Potato

Zone 12b Save Garden

🌱 80d to harvest Spreading

Silky-smooth skin and a luminous, creamy-white flesh define White Rose potatoes at maturity, with a gentle, nutty sweetness that …

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Jan 1st
Transplant / Sow Outdoors	Jan 1st
Harvest Begins	Mar 22nd
Harvest Ends	Dec 31st

Crop Details

Trait	Value
Days to Maturity	80
Sun Requirements	Full Sun
Growth Habit	Spreading
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	55
Min Soil Temp (°F)	45
Min Night Temp (°F)	35
Harden Off (days)	Not Required

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Frequently Asked Questions

What pest or disease most often affects Solanum tuberosum (white potato), and how do I control it?

Late blight (often starting as dark, water-soaked spots on leaves and rapidly spreading) is one of the most damaging problems for potatoes. Remove and destroy infected foliage immediately, avoid overhead watering, and apply a labeled fungicide early in the season or at the first signs according to the product label. Keep plants spaced for airflow and don’t save seed tubers from diseased plants.

How often should I water Solanum tuberosum during peak growth, and what soil moisture level should I maintain?

During tuber bulking (roughly mid-season through about 80 days), keep soil evenly moist but not waterlogged—aim for about 1–1.5 inches of water per week from rainfall plus irrigation. Water deeply when the top 1 inch of soil dries, then avoid letting the soil swing dry-to-saturated, which can reduce yields. Consistent moisture is especially important once plants start flowering.

How can I tell when my white potatoes are ready to harvest?

Start checking at about 80 days from planting, or earlier if vines are dying back and skin is thick. Harvest a small “test” row: if the tubers’ skins rub off easily, wait longer; if skins stay set and the plants have begun to yellow, they’re ready. For the best storage skins, wait 7–14 days after tops fully die back before harvesting.

Silky-smooth skin and a luminous, creamy-white flesh define White Rose potatoes at maturity, with a gentle, nutty sweetness that feels refined rather than starchy. The tubers form in tidy, oval-to-elongated shapes and hold a tender, velvety texture that shines in hearty, home-style preparations—ideal for roasting to a golden edge, mashing for a satiny bowl, and turning into comforting soups or gratins. Grow White Rose for reliable harvest timing around 80 days and a harvest that looks as good as it tastes.

Sowing Tips

Transplant Conditions

Wait until soil reaches 45°F and nights stay above 35°F before moving outdoors.

Expert Note

Plant certified seed potatoes in loose, hilled soil once soil temps reach the mid-40s °F, and keep adding soil as the plants emerge to prevent tubers from greening.