Do worm castings need to be fresh to make worm tea?
New to this game but say when I harvest some casting from my worm bin and store them for a month. Or better yet I have 1/4 quarter bag of castings left over from last summer where I purchased some. If I wanted to make a worm team would the castings still be viable?
It's my understanding that one the huge benefits of tea is the microbial activity. Now if the casting have set in a plastic bag for a 10 months and now I take some of that and use it to brew up some of the tea. Will I still get the microbial benefit?
My concern is while the casting are still in the worm bin it should be overrun with bacteria, but when you take it out and store it for months I'd think the bacteria die off. Or does adding oxygen into the tea kick start the bacteria again?