How to Grow Diamant Potato
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Diamant Potato
Solanum tuberosum 'Diamant'
vegetableDiamant is a mid-early potato variety prized for its uniform, oval-shaped tubers with smooth yellow skin and creamy yellow flesh. It is a highly productive cultivar that stores well and has excellent culinary versatility, making it popular for both commercial and home gardening.
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Example Diamant Potato timeline · Pittsburgh, PA (Zone 6b)
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Plant Diamant 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 Diamant Potato
Around Jun 26≈ 70 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8, with best performance in cooler climates (zones 4-7)
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Seed Preparation & Planting
1 weekSeed potatoes (2 oz pieces with 2-3 eyes) are planted directly in prepared rows. Soil should be cool and moist.
Use disease-free certified seed potatoes. Plant in spring when soil temperature reaches 45°F. Space rows 24-30 inches apart. Avoid planting in compacted soil.
Emergence & Early Growth
2-3 weeksSprouts emerge from soil, developing green shoots and initial leaves. Plant height grows to 4-6 inches.
Provide consistent moisture. Monitor for slugs and cutworms. Hill soil around plants as they grow to prevent tuber exposure to sunlight (which turns them green).
Vegetative & Flowering
3-4 weeksRobust foliage develops with multiple stems. White or light purple flowers appear on branch tips. Plant reaches 12-18 inches tall.
Hill soil 2-3 times during this stage, leaving 6-8 inches of soil around the base. Apply balanced fertilizer or side-dress with compost. Increase watering as tuber bulking begins. Watch for early blight (brown spots on lower leaves).
Tuber Bulking & Maturation
3-4 weeksFlowering ends; foliage matures and begins to yellow. Tubers enlarge underground, developing characteristic oval shape and yellow skin.
Maintain steady moisture without waterlogging. Continue hilling if needed. Reduce nitrogen fertilizer to avoid promoting excess foliage. Scout for late blight and Colorado potato beetles.
Harvest Readiness
1-2 weeksFoliage yellows, wilts, and dies back. Tuber skins have thickened, signaling readiness for harvest.
Stop watering 2 weeks before harvest to allow skin to set and mature. Harvest when vines are mostly dead. Use a fork carefully to avoid bruising tubers.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick larvae and adults; use row covers for young plants; apply spinosad or neem oil; encourage natural predators like ladybugs
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Spray with water to dislodge; use insecticidal soap; apply neem oil; encourage beneficial insects
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Practice crop rotation; trap adults with baited traps; use beneficial nematodes in soil
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Remove infected lower leaves; ensure good air circulation; mulch to prevent soil splash; apply copper fungicide if severe
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Choose resistant varieties; remove infected foliage immediately; apply copper or chlorothalonil fungicide; improve air circulation; avoid overhead watering
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Maintain consistent soil moisture; avoid limestone; choose resistant varieties; practice crop rotation
Uses
Versatile Table Potato
CulinaryDiamant potatoes are excellent for boiling, baking, roasting, and mashing due to their waxy texture and creamy yellow flesh. They maintain their shape well during cooking, making them ideal for salads, soups, and side dishes. [source]
French Fry & Chip Production
CulinaryThe uniform shape and low sugar content of Diamant make it commercially valuable for fries and chips. Home gardeners can cut and fry fresh potatoes for homemade fries. [source]
Long-Term Storage
HouseholdDiamant's excellent storage qualities mean harvested tubers can be kept for 5-6 months in cool, dark conditions, providing a steady food supply through fall and winter months. [source]
Nutritional Value
MedicinalPotatoes are rich in vitamin C, potassium, manganese, and B vitamins. Diamant provides essential carbohydrates and resistant starch when cooled after cooking. [source]
Pollinator Support
WildlifePotato flowers attract bees and beneficial insects, providing nectar and pollen resources during the growing season. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Diamant is a mid-early variety ready to harvest 70-85 days after planting. For new potatoes, harvest at 60-70 days when tubers are still small (golf ball-sized). For storage, allow vines to completely die back, then harvest carefully using a garden fork, lifting from the side to avoid bruising tubers. Handle tubers gently and cure in a cool, dark place (50-60°F, 85-90% humidity) for 2 weeks before storage. Store in cool, dark conditions (35-40°F) for up to 5-6 months.
Fun Facts
- 🌱 Diamant is a Dutch potato variety developed specifically for European markets and is particularly popular in Germany, Poland, and other Central European countries.
- 🌱 The tubers can weigh 150-250 grams each at maturity, making them an ideal size for single-portion meals and consistent cooking times.
- 🌱 Potato plants are actually part of the nightshade family (Solanaceae), which also includes tomatoes, peppers, and eggplants—which is why they shouldn't be planted together.
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