Description
Watermelon Seeds for Planting
Planting Guide
Seed Preparation:
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Soak seeds in lukewarm water for 2-4 hours before planting to improve germination.
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Optional: Test seed viability by placing seeds in water; discard any that float.
Best Planting Time:
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Outdoors: After last frost when soil temperature reaches 70°F (21°C) or warmer.
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Indoor Start: 2-3 weeks before last frost for transplanting (use biodegradable pots).
Planting Instructions:
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Soil: Sandy, well-draining soil with pH 6.0-6.8 (amend with compost).
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Depth: Plant 1 inch (2.5 cm) deep.
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Spacing:
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Bush varieties: 3-4 feet apart
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Vining types: 6-8 feet apart
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Sunlight: Full sun (8+ hours daily).
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Watering: Keep soil consistently moist until fruit sets, then reduce slightly.
Germination & Early Care:
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Germinates in 4-10 days at 75-90°F (24-32°C).
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Thin seedlings to strongest plant per mound/hill.
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Use black plastic mulch to warm soil in cooler climates.
Growth & Care
Watering:
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1-2 inches per week (deep watering preferred).
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Reduce watering when fruits ripen to improve sweetness.
Fertilizing:
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Apply balanced fertilizer at planting.
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Switch to low-nitrogen, high-potassium fertilizer when vines run.
Pollination:
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Requires bees for pollination (avoid pesticides during flowering).
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Male and female flowers grow on same vine.
Pest Management:
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Row covers protect young plants from cucumber beetles.
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Rotate crops yearly to prevent disease buildup.
Harvesting
Time to Maturity:
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Early varieties: 70-80 days
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Main season: 80-100 days
Harvest Signs:
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Dull thumping sound when tapped
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Dried tendril nearest fruit
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Creamy yellow ground spot
Yield:
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2-4 fruits per vine (depending on variety size).
Seed Saving
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Choose fully ripe, disease-free melons.
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Ferment seeds in water for 1-3 days, then dry completely.
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Store in cool, dry place for 4-6 years viability.
Note: Hybrid seeds won’t produce true-to-type plants.






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