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Watermelon Seeds

Watermelon Seeds

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$6.98

Grow Watermelon from seed as a long-term fruit, tree, or specialty garden project. Review the light, spacing, USDA zone, germination, mature height, and fruiting-time...

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Germination Support U.S. Customer Support Planting Guidance
SunFull Sun
Mature Height12-24 in.
Years to FruitAnnual Crop
Plant Spacing3-5 ft.
USDA ZonesAnnual
Germination Time4-12 Days

About Watermelon Seeds

Watermelon Seeds for Planting

Planting Guide

Seed Preparation:

  • Soak seeds in lukewarm water for 2-4 hours before planting to improve germination.

  • Optional: Test seed viability by placing seeds in water; discard any that float.

Best Planting Time:

  • Outdoors: After last frost when soil temperature reaches 70°F (21°C) or warmer.

  • Indoor Start: 2-3 weeks before last frost for transplanting (use biodegradable pots).

Planting Instructions:

  1. Soil: Sandy, well-draining soil with pH 6.0-6.8 (amend with compost).

  2. Depth: Plant 1 inch (2.5 cm) deep.

  3. Spacing:

    • Bush varieties: 3-4 feet apart

    • Vining types: 6-8 feet apart

  4. Sunlight: Full sun (8+ hours daily).

  5. Watering: Keep soil consistently moist until fruit sets, then reduce slightly.

Germination & Early Care:

  • Germinates in 4-10 days at 75-90°F (24-32°C).

  • Thin seedlings to strongest plant per mound/hill.

  • Use black plastic mulch to warm soil in cooler climates.

Growth & Care

Watering:

  • 1-2 inches per week (deep watering preferred).

  • Reduce watering when fruits ripen to improve sweetness.

Fertilizing:

  • Apply balanced fertilizer at planting.

  • Switch to low-nitrogen, high-potassium fertilizer when vines run.

Pollination:

  • Requires bees for pollination (avoid pesticides during flowering).

  • Male and female flowers grow on same vine.

Pest Management:

  • Row covers protect young plants from cucumber beetles.

  • Rotate crops yearly to prevent disease buildup.

Harvesting

Time to Maturity:

  • Early varieties: 70-80 days

  • Main season: 80-100 days

Harvest Signs:

  • Dull thumping sound when tapped

  • Dried tendril nearest fruit

  • Creamy yellow ground spot

Yield:

  • 2-4 fruits per vine (depending on variety size).

Seed Saving

  1. Choose fully ripe, disease-free melons.

  2. Ferment seeds in water for 1-3 days, then dry completely.

  3. Store in cool, dry place for 4-6 years viability.

Note: Hybrid seeds won't produce true-to-type plants.

Long-Term
Garden Homegrown
Fruit Zone Guidance

Why Gardeners Love It

✓ A long-term planting option for suitable garden climates

✓ Adds edible or ornamental value to the landscape

✓ Useful for gardeners growing beyond annual crops

✓ Can be started from seed with patience and care

✓ A rewarding project for experienced home growers

Planting Guide

Start Watermelon seeds in a warm, well-drained seed starting mix and keep evenly moist. Germination commonly takes 4-12 days.

Transplant to a site with full sun and about 3-5 ft. spacing once plants are established and local conditions are suitable.

Mature plants may reach about 12-24 in. and can take about annual crop to fruit. Best suited to USDA zones Annual.

Shipping & Returns
Orders are packed with care when items are available. Shipping options, delivery estimates, rates and taxes are confirmed at checkout where applicable.
Germination Support
If seeds do not germinate under recommended conditions, contact us within 30 days with your order number and photos of your setup. We will review eligible claims and help with replacement guidance, store credit or next planting steps.
Germination SupportGuidance for strong, healthy growth.
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Customer Reviews

Customer Reviews

Based on 12 reviews
67%
(8)
33%
(4)
0%
(0)
0%
(0)
0%
(0)
j
james.bradley
Great germination rate!

Planted 10 seeds and 9 sprouted! Very pleased with the results so far. Will definitely order more for the next season.

m
mia.richards
Highly recommended!

The seeds are fresh and viable. Watermelons are growing strong already. A fantastic product, highly recommended!

s
sarah.miller23
Will buy again\!

Excellent quality seeds. I followed the instructions and now I have healthy watermelon plants in just a couple of weeks. Highly recommend\!

l
luke.anderson
Nice germination rate

Planted them in seed trays and got 90% sprouting within a week. The plants look strong and healthy so far.

l
luke.anderson
Nice germination rate

Planted them in seed trays and got 90% sprouting within a week. The plants look strong and healthy so far.

123

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