Coffee grounds??

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.

Julie, I lived in your area a few years ago.  I did not notice the soil being like alkaline desert,

Where I live I don't have soil, my dirt is a great example of alkaline desert.

I was under the impression that coffee grounds were acidic.

Here are some threads that might help, especially the threads by Dr. Bryant Redhawk as he is a believer in the value of coffee grounds:

https://permies.com/t/45126/Coffee-Grounds

https://permies.com/t/124185/Coffee-grounds-confused-good-bad

https://permies.com/wiki/redhawk-soil

Julie, I'm copying a post from a year ago.  I'm in the Indy area.

My opinion - If you don't create a thick layer that can cause a crust and your yard/garden is 1/4 acre or larger and you have plants, grass and trees already growing - you should be fine.

I threw 50 lbs of ucg's on an urban lot the other day and couldn't even tell.  I could have used another 200 lbs to even start to make a difference.

Most of my research states that coffee is acidic and coffee grounds are neutral and Red Worms do quite well with coffee grounds.  

Currently I use ucg frequently and then make "instant" coffee to rinse the buckets out and fling that as well.

My neighbors enjoy watching me.

I have an outdoor, year-round worm bin that is 60-75% used coffee grounds.

I think you're good.

Keith

Thank you both for replies.

I did a search for coffee grounds before posting. Idk how I missed that thread.

I defiantly have the same soil as the desert areas.
Just sand and gravel. The supposed lawn area  was really just goatheads had a little clay mixed in but nothing that would hold any moisture.

Im glad I don’t have to undo my mini compost bins. The neighbor said that compost bins draw rats and roaches but the rats are here anyway eating my mini watermelons, cucumbers and cantaloups.