HI,
I am looking for an organic source of Nitrogen for my soil.
I bougt some blood meal, but then learned that it is dried cow blood. being a vegetarian that is a turn off.

I have worm castings but that is only 1-0-0.
I am growing in worm castings, potting soil, vermiculite, bat guano (didn't know how much of this to add, so I used a 3 tablespoons per plant) and peat moss.

I am concerned I don't have enough nitrogen, a couple of my plants lower leaves turned yellow with some spots, but I think maybe I spilled some water on them, and perhaps it acted like a magnifyer and the light burned them?

thanks