50-60 Days to Maturity, 30 days for microgreens. Apium graveolens var. secalinum. Kintsai Dark Green Chinese Celery Seeds. Heirloom, Non-GMO. The Kintsai Dark Green variety delivers a nice celery flavor and aroma that intensifies with age. The plant does not produce ribbed, thick stalks as conventional celery but small, thin stems and leaves. The open-pollinated plant is perfect for container growing and has mild frost tolerance. Perfect for temperate climates, it is decorative and thrives under cut-and-come-again conditions. Try planting alongside cauliflower to save space and maximize nutrient use. Approx. 75,000 seeds per oz.