90-100 days. Apium graveolens. Organic Red Stalk Giant Celery Seeds. Non-GMO, annual, organic, heirloom, open-pollinated. This is suitable for containers, garden plots, raised beds, and fields. Classic red-stalked celery with full, old-fashioned flavor that sweetens in cool weather, and is reliable and cold-tolerant. Start indoors for best results; tiny seeds need light to germinate. ~56,700 seeds/oz.