Coriandrum sativum 65 days. Most gardeners resort to successive plantings of coriander seed if they want lengthy harvests of fresh cilantro, but Calypso is changing that! The slowest bolting variety we’ve found, it consistently holds 3 weeks longer than our most popular variety. This robust grower produces lots of deliciously clean-flavored leaves for fresh-tasting dressings, dips and sauces. Approximately 110 seeds per gram. Germination code: (2)