A safe, natural slow-release fertilizer, Crab Shell also helps with nematode and fungus problems. Crab Shell is high in Chitin (Kite-en), which promotes the growth of Chitin eating bacteria in the soil. The exoskeletons of fungus and nematode eggs are high in chitin. Crab Shell helps to create a hostile environment for the fungus and nematodes by feeding the biological life that eats chitin and chitin based organisms.
An added bonus of Neptune's Harvest Organic Crab Shell is it's affect on Japanese Beetle grubs. Grubs in general, have jaws made of Chitin, which is dissolved by chitinase bacteria, killing off grubs at the same time!
Since it is 100% organic, this dry fertilizer won't burn plants or roots and it has no offensive odor!
NPK: 2-3-0 Ca23™ Also available in 12 lb. bucket size
Application Rate: Vegetable Gardens use 4 lbs per 100 square feet.