50-60 days maturity after transplant. Solanum melongena var. esculentum ’Choryoku’. Choryoku Eggplant Seeds. Non-GMO, warm-season, annual, hybrid. This long Japanese eggplant has a bright, shiny, spring-green skin and matures to 12 inches. The plant is a vigorous grower and prolific producer of large, firm, sweet, and tasty fruits. Choryoku is appropriate for containers, home gardens, and field growing. The plant grows well in warm climates and is advantageous for companion planting with other vegetables. Approximately 6,250 seeds per oz.