How to Seed Watermelon?

To seed watermelon, sow the seeds about 1 inch deep in mounds spaced 24 inches apart, planting 4-6 seeds per mound. Thin to the strongest 2-3 seedlings per mound.

Here's a more detailed guide:

Direct Sowing vs. Transplanting

You can seed watermelon in two primary ways:

• Direct Sowing: Planting the seeds directly into the garden soil.
• Transplanting: Starting seeds indoors and then moving the seedlings outdoors.

Direct Sowing Watermelon Seeds

1. Timing: Wait until the soil temperature is consistently above 70°F (21°C). Watermelons are very sensitive to cold.
2. Prepare the Soil: Choose a sunny location with well-drained soil. Watermelons need plenty of space to grow. Amend the soil with compost or well-rotted manure to improve fertility and drainage.
3. Create Mounds: Form mounds of soil about 24 inches (60 cm) in diameter and a few inches high. This helps with drainage and warms the soil more quickly.
4. Plant the Seeds: Sow 4-6 watermelon seeds about 1 inch (2.5 cm) deep in each mound.
5. Water Gently: Water the soil gently to avoid disturbing the seeds. Keep the soil consistently moist but not waterlogged until germination.
6. Thin Seedlings: Once the seedlings have developed 3-4 true leaves (not the initial seed leaves), thin them to the 2-3 strongest plants per mound. Use scissors to cut off the unwanted seedlings at soil level to avoid disturbing the roots of the remaining plants.

Transplanting Watermelon Seedlings

1. Start Seeds Indoors: Start seeds indoors about 3-4 weeks before the last expected frost. Use peat pots or biodegradable containers to minimize root disturbance during transplanting.
2. Sow Seeds: Sow 2-3 seeds per pot, about 1 inch (2.5 cm) deep.
3. Provide Warmth and Light: Keep the soil moist and provide warmth (70-80°F or 21-27°C) for germination. Once seedlings emerge, provide plenty of light (a sunny window or grow lights).
4. Harden Off Seedlings: Before transplanting, gradually acclimate the seedlings to outdoor conditions by hardening them off. Start by placing them outside for a few hours each day, gradually increasing the time over a week.
5. Transplant Seedlings: Once the soil has warmed and the danger of frost has passed, transplant the seedlings into mounds prepared as described above (for direct sowing). Space the mounds 24 inches (60 cm) apart. Plant 2-3 seedlings per mound.
6. Water Well: Water the transplanted seedlings thoroughly and keep the soil consistently moist until they are established.

Key Considerations:

• Soil Temperature: Watermelons need warm soil to germinate and thrive.
• Sunlight: Watermelons require at least 6-8 hours of sunlight per day.
• Watering: Water deeply and regularly, especially during hot weather.
• Fertilizing: Fertilize with a balanced fertilizer according to package directions.

By following these steps, you can successfully seed watermelons and enjoy a bountiful harvest.