Publius
He's referring to resurrected bodies as being spiritual, as opposed to the natural bodies we have now. He's using planting as a metaphor for death, burial, and resurrection.
Paul
The meaning is clearer if we use the term "nature", rather than "body", which some versions of the Bible do. Humans are composed of a combination of a physical nature and a spiritual nature.
T C
Same body Jesus Christ had when he was raised from the dead.
Gentile
it is a body that never decays never grows old it is a body that last forever. Thanks for the question.
Malcolm
The same one Paul describes in Philippians 3:21.