Castings contain: 5 times the available nitrogen, 7 times the available potash and 1 1/2 times more calcium than that found in 15 cm of good top soil. Therefore, castings are supplied with available nutrients. The nutrients are also water soluble and immediately available to plant life. You will find that most potting soils have nutrient life of 2-5 days, where worm castings will last up to 6 times as long as other types of potting soils.


found this but it dont help that much well we know this if you make the tea it will dissolve faster into the plants system but how the the nutes will remain valuable i'm gonna find out.I'll be back