|"Is this all real? Or has this been happening inside my head?"
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Star Grass is a medicinal herb that was once used to treat colic. It is presumably used as an ingredient for the Star Grass Salve.
Behind the scenes
- Star Grass probably refers to Aletris farinosa, also known as Unicorn Root and Ague Grass. There is another medicinal herb called star grass, Hypoxis hemerocallidea, native to South Africa.