This set includes 12 sprigs! These plants are very easy to grow and are essential for maintaining balance in your aquarium. May or may not arrive with roots. However, once planted you can expect roots within 1-2 weeks. Please be aware that these are live plants and will not handle shipping well during extreme cold or extreme heat. Anacharis can grow with or without CO2. Please research best practices for planting with your specific aquarium or pond setup.