Baby Doll is a heat-loving F1 hybrid watermelon that races to maturity in just 70-75 days, producing cheerful canary-yellow oval fruits weighing a modest 5-10 pounds. Bred for compact vigor and icebox convenience, these melons thrive in zones 3-13 under full sun and can even be grown in large containers, making them a genuine breakthrough for space-conscious gardeners. The vines spread less aggressively than standard watermelons, yet fruit can ripen as early as 40 days from sowing, giving you quick harvests without sacrificing flavor.

Photo © True Leaf Market
36
Full Sun
High
3-13
18in H x ?in W
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The standout feature here is the combination of speed and restraint. Baby Doll ripens faster than most watermelons while its vines remain less rambunctious than heirloom cousins, so you get full-sized flavor in a manageable footprint. That canary-yellow skin is a visual gift in any garden or market display, and at 5-10 pounds, each melon is the right size for a household without waste. The hybrid vigor keeps production reliable and consistent, which matters when you're counting on a harvest.
Baby Doll watermelons are grown as fresh eating fruit, sliced and served chilled on warm days or cut into cubes for fruit salads. The compact size and reliable ripening make them popular for farmers markets and home gardens where space is limited. The seeded, juicy flesh suits fresh consumption over processing, though they store well for short periods after harvest.
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Transplant seedlings outdoors once soil temperature reaches at least 70°F and all danger of frost has passed. Harden off seedlings over 7-10 days by gradually exposing them to outdoor conditions. Space transplants 36 inches apart in full sun, and plant them at the same depth they were growing in containers.
Direct sow seeds outdoors after soil has warmed to at least 70°F and all frost danger has passed. Plant seeds 1 inch deep and thin seedlings to 36 inches apart once they have developed true leaves.
Baby Doll watermelons reach harvest maturity 70-79 days after planting, though fruit can ripen as early as 40 days from sowing under ideal conditions. Harvest when the fruit shows a deep canary-yellow skin color and develops a creamy or dull finish rather than a glossy sheen. Check ripeness by looking for a pale, creamy spot on the bottom of the melon where it rested on the soil; this spot should be yellow or cream-colored, not pale green. The melon should feel heavy for its size and have a hollow sound when tapped gently. Cut the stem with a knife rather than twisting to avoid damaging the vine.
Baby Doll's vining growth habit typically doesn't require pruning for fruit production, though you can remove dead or diseased leaves as they appear. If growing vertically on a trellis, you may pinch back the main vine after 4-5 nodes to encourage branching and more even fruit distribution. Support developing fruits with soft slings if trellising to prevent the weight from breaking the vine.
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