Watermelon Seeds,
Blacktail Mountain

Start seeds indoors 3–4 weeks before your last frost date or direct sow once soil has reached at least 65°F. Blacktail Mountain is perfect for early sowing in colder zones thanks to its cold tolerance and early maturity. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

Sow seeds 1 inch deep, directly into raised beds or hills spaced 3 feet apart. For indoor starts, transplant seedlings once they have two sets of true leaves and nighttime temperatures remain above 55°F. Use row covers early on to protect young plants from pests and temperature swings.

Keep soil evenly moist until fruit begins to ripen, then reduce watering to concentrate sugars. Apply compost or organic fertilizer when vines start to sprawl. This variety matures quickly, so monitor closely for ripeness—look for a yellow belly spot and drying tendril near the fruit.

• Allow fruits from healthy, true-to-type plants to fully ripen and cure on the vine.
• Scoop seeds from the flesh and rinse in a strainer to remove pulp.
• Spread seeds on a screen or paper towel in a warm, dry place out of direct sunlight for at least 7-10 days.
• Stir daily to ensure even drying.
• Once completely dry, store in an labeled, airtight container in a cool, dark place.