I recently came across this article
https://www.discovery.com/science/Coffee-Grounds-in-Your-Garden
I have tubes about 2 feet from my new trees that are 6 “ diameter and about 20” deep that I pour my kitchen scraps in. It’s about 1/3 coffee grounds.
Now Im worried that I shouldn’t have put them in especially since its not composted in another area.
My soil is not acidic. Its very alkaline but I know that the trees are all grafted to grow in this sandy alkaline desert soil.
I cant say if it kills worms because I haven’t seen even one worm here. Whoever lived here before we bought the house last year had a grass lawn.