We prepared the proper offerings and asked a Shinto Priest to come to perform the ritual. The ritual involved putting a rope with Shinto folded paper around the tree. Then a temporary shrine was set up with the offerings. The priest first called the spirits with a chant and opened the sake and other offerings. We then did a ritual where we were blessed, the tree was blessed and we paid our respects to the spirits. Then there was a closing ritual which ended in drinking sake to toast the home and the tree. I took the salt and rice from the offerings table and sprinkled it around the tree.
Immersed in an orchestra of various insects, I stared at our Shii tree for half an hour or so and felt really good. There is something about Shinto ritual that stirs something deep inside.