Hollow Crown Parsnip, pre-1825 Heirloom
Hollow Crown Parsnip, pre-1825 Heirloom

Blacktail Mountain Watermelon, Organic

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Blacktail Mountain Watermelon: The Legendary Short-Season Sweetheart

Bring mouth-watering, old-fashioned watermelon flavor to northern gardens and short-season climates with the legendary Blacktail Mountain Watermelon (Citrullus lanatus). At Firefly Farm & Mercantile, we consider this extraordinary heirloom a triumph of Northern plant breeding. Developed in the rugged mountains of Idaho by Glenn Drowns in the late 1970s and 1980s, this variety was specifically bred to thrive, ripen, and burst with sugary sweetness where traditional southern watermelons fail.


📜 A Northern Breeding Legacy

The story of Blacktail Mountain is a testament to perseverance and ingenious homestead breeding.

  • Conquering Short Summers: Frustrated by commercial watermelons that required endless frost-free days to ripen in Idaho's harsh mountain climate, gardener and seed saver Glenn Drowns set out to breed a superior icebox melon. By crossing various strains over many years, he created an ultra-hardy, early-maturing masterpiece.
  • A Homestead Icon: Introduced to seed catalogs in the late 1980s, Blacktail Mountain quickly became the gold standard for short-season growers, northern homesteaders, and gardeners with limited space who refuse to compromise on flavor.
🎨 Visual & Culinary Profile

Blacktail Mountain is an absolute powerhouse of flavor packed into a convenient, garden-friendly size.

  • The Fruit: Round to slightly oval fruits averaging 8 to 12 pounds. The rind is a deep, dark greenish-black (hence its fitting name) with faint, dark striping.
  • The Flesh & Flavor: Inside, you’ll find a crisp, brilliantly bright red interior packed with dark seeds. The flavor is exceptionally sweet, rich, and juicy—rivalling any massive southern melon in pure, sugary refreshment.
  • Culinary Uses: Perfectly sized to chill easily in a standard kitchen refrigerator! Slice it open for backyard barbecues, pack it for summer camping trips, or enjoy cool, dripping wedges on the porch after a long day in the garden.
🌿 Garden Performance & Technical Specifications

Blacktail Mountain is an early-maturing, space-saving vining crop tailored for cooler climates and northern regions.

FeatureTechnical Specification
Plant TypeAnnual Vining Crop (Citrullus lanatus)
Historical Significance1980s Glenn Drowns Idaho Heirloom
Days to Maturity70–80 Days from Transplant (Remarkably early!)
Fruit Weight8–12 lbs (Convenient icebox size)
Sun RequirementFull Sun
Climate AdaptabilityExceptionally cold-tolerant and early-maturing
✨ Why We Love It

"Blacktail Mountain is a miracle for northern gardeners. We love it because you get that quintessential, sugary-sweet heirloom watermelon flavor in just 75 days, on a compact vine that doesn't take over the entire yard. It proves you don't need a southern summer to grow world-class watermelons."

👨🌾 Cultivation Tips
  • Early Start for Cool Climates: Start seeds indoors in peat pots about 3 to 4 weeks before your last spring frost. Watermelons have sensitive roots, so transplanting them gently helps avoid shock.
  • Warmth & Sun: Plant in full sun in rich, well-draining soil. Black dark-green rinds absorb sunlight efficiently, helping the fruits warm up and ripen quickly even in cooler summer regions.
  • The Harvest Cue: Look for the tendril nearest the fruit stem to turn brown and dry, and watch for the underside "ground spot" to shift from white to a creamy, buttery yellow.

Blacktail Mountain Watermelon, Organic Reviews