I think it’s nutrient value is still there, just maybe any microbes that were with it in the package have died off.
The reality is we as humans have used guanos that have sat in caves hundreds of years as fertilizer just fine, so I doubt it sitting in a bag on a shelf for a few years would really make it useless. Finally being a high P guano, it’s more likely a white/light gray powder and it’s probably closer to soft rock phosphate than an actual guano and very stable.
Thanks for the reply.
So I just mixed up a batch of some organic soil. Base is new and reused ffof soil with crab shell meal, keep meal, high phosphorus guano, EWC, and a little bit of dry organicare nutes mixed in. I mixed up several different strengths to run tests with.
My question is I've heard the term "cooking" your soil and having "living" soil with microbes and what not. Is there more I should be doing with this mix to cook it or grow/benefit microbes? I thought I've seen someone talk about watering their soil after mixing it. I appreciate any info, this is all new to me.
The goal is to be able to have the plants run the coarse of their life without having to add much of any nutes besides whats put in their soil initially, if that's even possible for medium sized plants, probably ~1.5 month veg so up to possibly 4.5 month old plants.