How to Grow Large White Potato
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Large White Potato
Solanum tuberosum 'Large White'
vegetableLarge White is a classic potato variety known for its large, oblong tubers with smooth white skin and white flesh. It's a versatile, high-yielding variety that has been a staple in gardens and commercial cultivation for over a century. This mid-season potato is excellent for boiling, mashing, and general culinary use.
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Example Large White Potato timeline · Pittsburgh, PA (Zone 6b)
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Plant Large White Potato
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Large White Potato
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Large White Potato dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-8, prefers cooler climates but adapts well across most regions
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Get my Large White Potato timeline →Growth Stages
Sprouting
2-3 weeksSeed pieces are planted and develop initial shoots. Eyes on the potato pieces begin breaking dormancy.
Ensure soil temperature is 45-50°F minimum. Keep soil consistently moist. Mulch to maintain soil temperature and moisture.
Vegetative Growth
4-6 weeksLeafy stems emerge above ground, reaching 12-18 inches tall. Dense green foliage develops; plant becomes bushy.
Hill soil around stems 2-3 times as they grow to prevent light exposure of tubers. Apply mulch. Begin fertilizing with balanced fertilizer if soil is poor.
Flowering & Tuber Development
3-4 weeksSmall white or pink flowers appear. Underground, tubers begin sizing. Plant reaches full height and canopy coverage.
Maintain consistent watering; this is critical for tuber expansion. Continue hilling if needed. Remove flowers if desired to redirect energy to tubers (optional).
Maturation
2-3 weeksFoliage begins yellowing and dying back. Tuber skins harden and thicken. Plant signals tubers are ready for harvest.
Reduce watering gradually as plant senesces. Do not harvest until foliage is mostly dead (skin set). Avoid damaging tubers during any remaining cultivation.
Harvest & Storage
Ongoing storage 2-8 monthsFoliage is completely dead and brown; tubers are fully mature with hardened skin.
Carefully dig tubers to avoid cuts and bruises. Cure in a cool (50-60°F), dark, humid (85-90% RH) location for 2 weeks to heal wounds. Store at 45-50°F in darkness.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick eggs and adults; use netting; apply spinosad or neem oil; resistant varieties; crop rotation; encourage natural predators.
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Spray with insecticidal soap or neem oil; strong water spray; reflective mulches; encourage ladybugs and parasitic wasps.
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Row covers on young plants; diatomaceous earth; spinosad spray; kaolin clay spray; crop rotation.
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Crop rotation; fall cultivation to expose larvae; remove plant debris; early planting; resistant varieties; avoid wet soils.
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Ensure good air circulation; avoid overhead watering; remove infected foliage immediately; copper or sulfur fungicides; resistant varieties; proper spacing.
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Maintain soil pH 5.0-5.5; adequate soil moisture; avoid lime; resistant varieties; sanitation; crop rotation.
Uses
Boiling & Mashing
CulinaryLarge White potatoes have waxy to all-purpose texture, making them excellent for boiling, mashing, and general cooking. Their creamy texture and mild flavor make them ideal for comfort foods. [source]
Roasting & Baking
CulinaryThe firm flesh holds up well to roasting, baking, and inclusion in soups and stews. Large White potatoes are versatile enough for most culinary applications. [source]
Food Storage & Preservation
HouseholdLarge White potatoes store exceptionally well for 2-8 months in proper cool, dark conditions, making them valuable for winter food security and long-term household supply. [source]
Traditional Nutrition
MedicinalPotatoes are rich in vitamin C, potassium, and B vitamins. They have been a dietary staple for weight and immune support in traditional cuisines worldwide. [source]
Vegetable Printing & Art
CraftPotato halves can be carved and used for natural vegetable printing and educational craft projects for children. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when foliage has died back completely, typically 90-120 days after planting. Dig carefully to avoid cuts and bruises. Allow tubers to cure in a cool, dark place for 2 weeks before storage. Handle gently during harvest and storage. Store in cool (45-50°F), dark conditions with 85-90% humidity for months-long storage.
Fun Facts
- 🌱 Large White is one of the oldest potato varieties still in cultivation, first documented in the 1880s and remains a beloved heirloom variety worldwide.
- 🌱 Potatoes are the world's fourth-largest food crop after rice, wheat, and corn, and Large White played a significant role in global food security for over 150 years.
- 🌱 A single potato plant can produce 8-12 tubers, and Large White is particularly productive—a well-grown plant can yield 1-2 pounds of harvestable potatoes.
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