Spirit Ether Gardens are pocket dimensions that laid between the Spirit Realm and Mortal Realm. The entrances to them exist in Devilfall Valley. They are filled with medicine plants and abundant spiritual Qi.
Spirit Ether Gardens were created with treasures of powerful cultivators to grow spiritual medicines using spiritual Qi that far surpassed that from the Mortal Realm. These gardens were specialized in growing all sorts of rare spiritual herbs. However, there was some unforeseen mishap and all of the Spirit Ether Gardens disappeared without a trace and future cultivators were no longer able to find them. Some of them may have been plucked clean and destroyed in battles for possession.