Suyo Long Cucumber

Sow seeds indoors in 50-cell plug trays, placing 1 to 2 seeds per cell. Keep temperatures above 70°F during the day and no lower than 60°F at night. Start seeds 3 to 4 weeks before your planned transplant date, which should occur only after nighttime temperatures stay reliably above 50°F and soil has warmed.

Transplant seedlings into the garden when they are approximately 2 inches tall, spacing them 18 inches apart in rows 48 inches apart. Handle seedlings gently and avoid disturbing roots during the transition. Set up vertical supports (stakes, cages, or trellises reaching 4 to 5 feet) around each seedling immediately after planting, then train vines upward as they grow.

You can sow seeds directly into warm, well-prepared garden soil. Sow groups of 2 to 3 seeds together, 18 inches apart, at a depth of 1 inch. When seedlings reach 2 inches in height, thin out the weaker ones, leaving a single strong seedling per group.

Pick fruit daily once the plant begins bearing. Harvest cucumbers when they reach approximately 15 inches long and maintain their characteristic dark-green color and thin, crispy skin. Regular harvesting encourages the plant to continue flowering and setting new fruit throughout the season. Use a sharp knife or pruners to cut fruit from the vine rather than pulling, which can damage the plant.

As a vigorous vining cucumber, Suyo Long benefits from early and consistent training onto vertical supports. Install 4 to 5-foot tall stakes or tomato cages around each seedling immediately after transplanting, then gently guide vines upward as they grow. This vertical training improves air circulation, reduces disease pressure, makes harvesting easier, and maximizes productivity in limited garden space.