Dried Product - not suitable for growing. Celery seed is a plant in the family Apiaceae, better known as a vegetable. The seeds are an integral part of America, Irish, Japanese and Australian cuisine. Health benefits of celery seeds include: high in manganese for antioxidant defense, high magnesium content for better sleep, enhanced cognition, blood pressure regulation, rich in iron and copper, a good source of vitamin C and anti-inflammatory.