🍉 Yellow Doll Watermelon

What it looks like

Why this variety

Yellow Doll is the watermelon that breaks two assumptions at once: that watermelons must be huge, and that they must be red inside. It is a small icebox melon, typically 5–8 pounds, with sweet, crisp, golden-yellow flesh — and it ripens in about 70 days, which makes it one of the earliest melons you can grow.

That earliness is a strategy, not just a convenience: a 70-day melon can be succession-planted, can beat late-summer disease pressure to the finish line, and fits gardens where a 40-pound melon vine would be a hostile takeover. The vines are semi-compact by watermelon standards, which is still to say they sprawl — just less imperially.

Florida translation: Yellow Doll is a smart Florida melon because it finishes fast, before the worst of the rainy-season disease pressure, and its small size suits raised beds and modest patches. Plant in warm soil, mulch once soil warms, and taper water as fruit ripens so the yellow flesh sweetens fully.

For the species as a whole, see the Watermelon growing guide.

How to grow

Direct-sow after all frost danger, when soil is at least 70°F; watermelon seed sulks in cold soil and rotting seed is the usual cause of a blank hill. Sow 1 inch deep, 3–4 seeds per hill, and thin to the 2 strongest plants. In short-season zones, start indoors 3–4 weeks before last frost in peat pots — watermelon roots resent disturbance — and choose an early variety plus black plastic mulch to bank extra heat. Vines run 6–15 feet, so plan for sprawl or train them up a very sturdy trellis (fruit in slings if you go vertical). Bees do the pollination, and a watermelon flower that is not visited simply drops, so plant flowers nearby and skip row cover once bloom starts. One plant typically carries 2–4 good fruit; pinch off extra fruit late in the season so the plant finishes what it started.

Sow Yellow Doll directly in warm soil (at least 70°F), 1 inch deep, and thin hills to the 2 strongest plants; even semi-compact vines want several feet of room.

Water & feeding

Deep, regular water — 1–2 inches a week — while vines grow and fruit sizes up, then taper off as fruit approaches ripeness: heavy late watering dilutes sugars. Work worm castings into each hill at planting and side-dress at flowering; castings carry a low burn risk and feed steadily without the nitrogen surge that grows vines at the expense of fruit. Mulch heavily once soil is warm to hold moisture and keep fruit clean.

Common problems

• Poor fruit set: usually missing pollinators or cold nights — hand-pollinate morning flowers (male to female; females carry a tiny melon behind the petals) and be patient in cool weather.
• Cucumber beetles: row cover until flowering; they spread bacterial wilt, which has no cure once established.
• Blossom end rot (black, sunken blossom end): uneven watering interrupting calcium movement — mulch and water evenly rather than reaching for a calcium spray.
• Hollow heart or cracked fruit: sudden water after drought, or over-ripe fruit left on the vine — keep moisture even and harvest on time.

Harvest

Thump, look, and check the tendril: a ripe watermelon sounds dull and hollow (not high-pitched), the underside spot where it sat on the ground has turned from white to creamy yellow, and the curly tendril nearest the fruit stem has dried and browned. Cut, do not pull, the stem, and chill promptly. A watermelon picked early will not sweeten off the vine.

Saving seeds

Yellow Doll is the watermelon that breaks two assumptions at once: that watermelons must be huge, and that they must be red inside. It is a small icebox melon, typically 5–8 pounds, with sweet, crisp, golden-yellow flesh — and it ripens in about 70 days, which makes it one of the earliest melons you can grow. That earliness is a strategy, not just a convenience: a 70-day melon can be succession-planted, can beat late-summer disease pressure to the finish line, and fits gardens where a 40-pound melon vine would be a hostile takeover. The vines are semi-compact by watermelon standards, which is still to say they sprawl — just less imperially. In Florida, Yellow Doll is a smart melon because it finishes fast, before the worst of the rainy-season disease pressure, and its small size suits raised beds and modest patches. Plant in warm soil, mulch once soil warms, and taper water as fruit ripens. Yellow Doll is an F1 hybrid — Harris Seeds sells it as “Yellow Doll F1” and Oregon State Extension lists it as “Yellow Doll (F1)” — so seed saved from it will not come true to Yellow Doll: buy a fresh packet each year. The full method is in the Saving seeds section of the Watermelon guide.