item despawning

This is my first time playing with controller on iOS: pressing Square in inventory,which drops the item, makes it disappear semi permanently, which is unfortunate as I didn't know what square did. The only items I could recover were tools from Lost and Found. I tried this at town, on farm, and...

So I’m not the brightest Stardew Player, and I was lazy, so I didn’t take the debris off my farm till year 5. So I thought it would be a good idea to blow the debris right of my farm using mega bombs. So I bought 100 and blew a ton of trees and rocks off my farm. But obviously I can’t hold tons...