Worm castings and bat guano

Recently i went out and bought some worm castings and some bat guano. The question that i had is do i mix the worm castings in the soil before even planting it there. Also do i use these wrom castings all the way through vegation and floweing, or just vagation? My next question that i had is for the bat guano ive heard of people sayin just to use it only during flowering, and if true do i mix that in the dirt or do i just spread some around the trunk of the plant and surface feed it. If somone could explain when and how to use each it would be appreciated because im a nube.

Ya id like to know the same thing. anybody?????????????????

id like to know this also, any how too's on this maybe.

yes.. mix it in with your soil before you put the plant in.. this will last you for the first couple weeks and then you can sprinkle more on afterwards as needed.