worm castings on garden? fertilizer? please clarify question

The fertilizer I refer to include 10-10-10 that I apply to grass on the higher slope and Camelia/Rose/Azalea fertilizer. Under the worst case scenario, it might leech down to the lower slope. No worries from direct contact with that kind of store bought fertilizer and the pathway.

So, I'm trying to determine the safety and purity of the worm castings that I'm digging up on the lower slope. Can I apply it to edible herbs I have growing in containers?

there's that. I wouldn't use chemicals for anything, but you can remediate the soil with mycorrhiza (microscopic fungi)

use that compost on the edibles. Add some mycorrhizae liquid to the place where you're adding the new soil and the little baby fungi will clean up all the bad stuff and add life to soil.

Their castings are good for plants and they help in the life cycle of supportive fungi but
overall our common earthworm are not good for the environment. In the vast majority of
our forested ecosystems they digest the leaf litter before it can become thick enough to
help in the forest floor's biodynamics.

There were two things that were true when I first moved into this house over twenty years ago. The first, that I couldn't find an earthworm to save my life. The property had been unoccupied for a year and the ground dry. And the second was that there wasn't a lizard to be found. Now we have tons of both.

20+ years ago there were no earthworms in my soon to be garden... now they are prolific after years of adding compost, chicken manure and organic matter such as leaves from my woods

worm castings are excellent fertilizer and there is no reason not to use them... doesn't seem to be a problem with potential runoff although if you are certified organic, there is a concern

There is nothing dangerous with 10-10-10 for food growth. Most organic fertilizers are the same substances, but made from natural and sustainable processes, whereas commercial fertilizer is factory made and usually requires oil/gas. The plants do not care. They get the nutrients either method.

I have both organic beds and non-organic beds. My organic beds are raised and have a custom soil mix and are infused with mycorrhizae. The non-organic beds are natural New England Charlton type soil (fine sandy loam) and would require substantial efforts to convert to a sustainable compost infused garden area, so I just hit that spot with osmocote. After years of testing between the two systems, the results were negligible in differences.

Is there a place to purchase mycorrhizae?

I don’t see it this year on their website.

In my 30 day social distancing regime, I plan to spend more time in my garden. Thank you for the information.

I'm sure that hasn't been bought out during the panic shopping.