1. Seed Stratification (Pre-treatment):
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Place seeds in moist sand or paper towel in a plastic bag.
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Refrigerate at 1–5°C (34–41°F) for 90–120 days.
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This cold stratification process mimics natural winter conditions and improves germination rates.
2. Germination:
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After stratification, plant seeds 1/2 inch deep in seed-starting mix.
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Keep soil consistently moist and place in a warm, sunny spot (18–24°C or 65–75°F).
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Germination may take 2–8 weeks.
3. Transplanting Outdoors:
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Transplant seedlings after the last frost when plants are 4–6 inches tall.
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Choose a sunny location with well-draining soil.
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Space vines 6–10 feet apart and provide a trellis or support.
4. Care & Maintenance:
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Water regularly during dry periods but avoid overwatering.
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Prune annually during dormancy to encourage fruit production.
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Fertilize in early spring with balanced fertilizer.
Harvest:
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Expect fruits in 2–3 years. Harvest when grapes are fully deep purple and sweet.
