I am using pine needles for mulch in the garden. I have them stuffed around my Christmas ferns. It allows the ferns to stand up a bit and look more atractive in the winter months. They must like the acid as I often see them in the woods growing under pine trees. I would love to use them in other beds where I have hostas to help protect the hostas from the severe winter and also because they give a nice tidy look to the garden during the winter. I am not sure if this will be too much acid for the hostas. Let me know what you think.