Orange Flesh
Tendersweet Orange Watermelon is a heirloom, non-GMO cultivar prized for its striking deep-orange flesh and reliable 90-day maturity. These oblong fruits reach 18 by 12 inches and weigh 30-40 pounds, wrapped in a light-green rind with dark-green stripes that are tough enough for farmers market sales. Unlike some orange-fleshed varieties, this melon combines exceptional sweetness and crisp texture with minimal seeds, thriving in USDA zones 3-13 and delivering consistent yields even in warm-weather gardens.
Full Sun
High
3-13
18in H x ?in W
Annual
High
Hover over chart points for details
The flesh is an intensely sweet, crisp deep orange that tastes remarkably clean without any hint of bitterness, and the white seeds with black markings add visual intrigue when you slice into it. Most impressive is the rind's durability: it's thick enough to handle transport and display at farmers markets, solving a real problem that plagues other orange-fleshed varieties. Each plant produces between 5-7 medium melons or 2-3 larger fruits, and the variety shows greater disease resistance to powdery mildew than most competing cultivars.
This watermelon is primarily enjoyed fresh, sliced and eaten at the table or at summer gatherings where its striking orange flesh commands attention. The sweet, crisp texture makes it exceptional for fresh consumption rather than cooking. Because the rind holds up well through handling and transport, it has become a preferred choice among farmers market vendors and home gardeners who want to share their harvest beyond their immediate household.
Start seeds indoors 3-4 weeks before your last frost date in seed-starting mix kept at 70-85 degrees Fahrenheit. Watermelon seeds germinate reliably in warm conditions, though they dislike being transplanted, so use peat pots or soil blocks to minimize root disturbance.
Harden off seedlings over 7-10 days by gradually exposing them to outdoor conditions. Transplant after your last frost date when nighttime temperatures consistently reach 60 degrees Fahrenheit or higher. Plant at the same depth they were growing indoors.
Direct sow seeds outdoors after all frost danger has passed and soil temperature reaches at least 70 degrees Fahrenheit. Sow seeds 1 inch deep in groups of 2-3 seeds spaced 36 inches apart.
Tendersweet Orange watermelons reach harvest readiness at 90-99 days from planting, though most sources report 90 days as standard. Look for fruits that feel heavy for their size, a creamy spot on the bottom where the melon rested on soil, and a dusky sound when thumped (a hollow thud rather than a tight, high-pitched tone indicates ripeness). The skin should show good color contrast between the light and dark green stripes without any large yellow or orange patches. Cut melons from the vine with a sharp knife rather than twisting them off.
Enter your ZIP code to see a personalized growing calendar for this plant.
“Tendersweet Orange is recognized as the standard for orange-fleshed watermelons in the heirloom seed world. It shares visual ancestry with the Allsweet type, featuring similar dark-green striping on a lighter background, but was selected specifically for its superior flavor and flesh color. The variety earned its reputation among serious seed savers and market gardeners as a bridge between visual appeal and eating quality, becoming the benchmark against which newer orange-fleshed watermelons are measured.”