100% Pure, Organic Worm Castings. Concentrated Strength. 6 lbs. makes 24 lbs. of the very finest all Natural, Organic Fertilizer. Great for seed starting, transplanting maintaining above average growth during the entire growing cycle. Loaded with all the nutrients needed to produce bigger, tastier vegetables and larger, more colorful Flowers. Plus Calcium for plant strength and Iron for greening. You will also experience yields that are much larger than before. Just Add Water.