Salusa Secundus is the third planet of the Gamma Waiping system and the homeworld of the Imperial House Corrino; also noted as the second stopping point in the migrations of the Zensunni Wanderers. The Royal Court is moved to Kaitain, and Salusa is designated the Imperial Prison Planet. It is also the secret training ground for the Emperor's elite Sardaukar troops, and one of two planets on which shigawire is grown (the other being III Delta Kaising).
Read more about this topic: List Of Dune Planets