Early Prolific Straightneck is a legendary heirloom summer squash that earned an All-America Selections award back in 1938, developed in Detroit when home gardening was hitting its stride. The plant produces uniform, lemon-yellow club-shaped fruits that reach 5 to 6 inches long and deliver tender, delicious flesh that cooks down beautifully. Harvest begins in just 50 to 60 days, making it one of the earliest summer squashes you can grow. It thrives in full sun with warm soil (70 to 95°F) and needs just 24 inches of spacing, fitting comfortably into containers or tight garden beds.
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This is summer squash the way it was meant to taste: smooth, uniform fruits with that prized tender quality that disappears as squash overgrows. The bright lemon-yellow color and club shape are unmistakable in the garden and at the market, and the consistent yields have made it a reliable workhorse for nearly a century. Early Prolific lives up to its name with harvests arriving before most other summer varieties, giving you that first taste of summer abundance weeks ahead of the competition.
Summer squash like Early Prolific Straightneck are harvested young and tender for sautéing, roasting, grilling, and adding to stir-fries. The small to medium size (5 to 6 inches) means the flesh is delicate and cook through quickly, making it perfect for weeknight meals. It can also be sliced thin for raw salads or breaded and fried, and the skin at this size is thin enough to leave on or peel away depending on preference.
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Sow seeds directly in the garden after the last frost date when soil has warmed to at least 70°F. Plant seeds 1 inch deep in full sun in prepared, well-draining soil enriched with compost. Seeds sprout in 5 to 10 days under warm conditions.
Begin harvesting when fruits reach 5 to 6 inches long, typically 50 to 60 days after planting. Pick them when the skin is still tender and has a bright lemon-yellow color; waiting for larger fruits causes the flesh to become seedy and tough. Harvest every 2 to 3 days during peak season to encourage the plant to continue producing new flowers and fruits. Use a sharp knife to cut the fruit cleanly from the vine rather than twisting it off, which can damage the plant.
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“Early Prolific Straightneck emerged from Detroit in the 1930s at a time when American seed companies were racing to develop superior home garden varieties. The variety earned recognition as an All-America Selections winner in 1938, a prestigious distinction that meant home gardeners across the country sought it out. This honor cemented its place in seed catalogs and kitchen gardens for generations, and it has remained a trusted heirloom ever since, passed down by gardeners who valued its reliability and flavor above trendy newcomers.”