How to Grow Polara
Wikimedia Commons
Polara
Solanum tuberosum 'Polara'
vegetablePolara is a mid-season potato variety known for its deep purple skin and flesh, offering excellent nutritional benefits with high anthocyanin content. This Dutch cultivar produces medium-sized, oval tubers and is prized for both culinary appeal and disease resistance. It's a versatile potato suitable for boiling, roasting, and specialty dishes.
When should you plant Polara in your zone?
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Example Polara timeline · Pittsburgh, PA (Zone 6b)
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Plant Polara
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 Polara
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Polara dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-7, with best results in cooler climates (zones 3-6)
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Get my Polara timeline →Growth Stages
Seed Potato Dormancy & Sprouting
2-4 weeks pre-plantingSeed potatoes develop eyes and small sprouts begin to emerge. Tubers appear firm with visible growth points.
Store seed potatoes in a cool (50-60°F), dark place for 2-3 weeks before planting to encourage sprouting. Cut large seed potatoes into 1.5-2 oz pieces with at least 2 eyes each. Allow cut pieces to heal for 1-2 days before planting.
Emergence & Vegetative Growth
4-6 weeks after plantingSprouts push through soil and develop into leafy green shoots with compound leaves. Plant grows 6-12 inches tall with multiple stems.
Hill soil around developing plants every 2-3 weeks to prevent greening of tubers and support stems. Remove weeds regularly. Water consistently. Monitor for early blight. Begin fertilizing with balanced NPK when shoots are 4-6 inches tall.
Vegetative Peak & Flowering
3-4 weeksPlant reaches maximum height (18-24 inches), develops full canopy of purple-tinged leaves, and produces flowers (typically white to purple). Stem thickening is evident.
Maintain consistent watering—this is critical for tuber bulking. Continue hilling if needed. Watch for late blight and aphids. Reduce nitrogen fertilizer to prevent excessive vine growth at expense of tuber development. Support heavy stems if needed.
Tuber Bulking & Fruit Set
4-6 weeksUnderground tuber development accelerates. Vines remain green and healthy. Tubers swell to medium size with purple coloration developing internally.
Maintain consistent, deep watering (tubers need 1-1.5 inches weekly). Apply thick mulch to regulate soil temperature and moisture. Avoid high nitrogen fertilizer. Check soil moisture at depth of 4-6 inches. This stage is crucial for yield and quality.
Maturation & Harvest-Ready
2-3 weeks before harvestVines begin to yellow and die back naturally. Tuber skins firm up and thicken. Foliage weakens and may show natural senescence.
Reduce watering gradually as vines decline. Stop watering 2-3 weeks before planned harvest to allow skins to cure. Once vines are 80% dead, tubers are ready for harvest. Harvest on a dry day to minimize soil clinging and disease spread. Handle tubers gently to avoid bruising.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick beetles and eggs daily, use row covers on young plants, apply spinosad or neem oil, encourage natural predators (ladybugs, parasitic wasps)
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Spray with strong water stream, use insecticidal soap, apply neem oil, introduce beneficial insects like ladybugs
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Improve air circulation, mulch to prevent soil splash, remove infected foliage immediately, apply copper-based fungicide or chlorothalonil preventatively, ensure adequate spacing
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Remove lower leaves as plant grows, apply copper fungicide, maintain good air circulation, avoid overhead watering, sanitize tools
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Crop rotation (2-3 year gap), avoid planting in recently sod-turned areas, apply beneficial nematodes, use trap crops like corn or wheat
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Maintain soil pH below 6.0, avoid high calcium amendments, improve drainage, avoid sulfur near potatoes, choose resistant varieties
Uses
Specialty Cooking & Presentation
CulinaryPolara's striking purple color makes it ideal for gourmet dishes, colorful potato salads, gratins, and roasted medleys. The distinctive appearance maintains its color when cooked, providing visual appeal to both traditional and modern cuisine. [source]
Antioxidant-Rich Nutrition
MedicinalPurple potatoes like Polara are high in anthocyanins and polyphenols, compounds with strong antioxidant and anti-inflammatory properties. Regular consumption may support heart health, blood sugar regulation, and overall cellular health. [source]
Boiling, Mashing & Comfort Foods
CulinaryPolara's medium starch content and firm texture make it excellent for boiling, mashing, and use in soups and stews. The purple color carries through cooking, creating visually distinctive comfort food dishes. [source]
Long-Term Storage
HouseholdPolara has excellent storage potential, keeping well for 3-4 months in cool, dark conditions with minimal sprouting. Its thick skin and robust nature make it ideal for root cellar or cool basement storage. [source]
Flower Pollinator Support
WildlifePotato flowers provide early-season pollen and nectar for bees and other beneficial insects. Allowing flowers to bloom before harvest supports local pollinator populations. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Polara potatoes are ready to harvest 90-110 days after planting, or when vines have died back 80%. Harvest on a dry day by carefully digging around plants with a fork, working from the sides inward to avoid damaging tubers. Handle harvested potatoes gently to prevent bruising and skinning. Cure harvested tubers in a cool (50-60°F), well-ventilated location out of light for 10-14 days to firm skins before storage. Store in cool (45-50°F), dark, humid conditions for long-term keeping. Polara stores well for 3-4 months with proper conditions.
Fun Facts
- 🌱 Polara was developed in the Netherlands and belongs to the modern wave of purple potato cultivars bred specifically for their nutritional anthocyanin content, which can reach concentrations 2-3 times higher than traditional yellow or white varieties.
- 🌱 The purple pigmentation in Polara comes from anthocyanins—the same compounds that give blueberries, purple cabbage, and acai berries their color—and these compounds are preserved even after cooking, making it one of the few vegetables that maintain their distinctive pigmentation through various cooking methods.
- 🌱 Polara exhibits notably good resistance to late blight (Phytophthora infestans), a fungal disease that historically caused the Irish Potato Famine, making it a more reliable choice than many heirloom varieties.
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