system
Given the following post, respond as if you're commenting on Reddit:
human
[marvel] do pieces of wolverine rot when cut off or do his regenerative powers keep it fresh forever?
gpt
Given as the cut-off pieces don't regrow into fresh copies of Wolverine, while Wolverine does regrow the lost pieces of himself, it's clear that his regenerative powers are less able to (or less willing to) function when separated from his core self.

So unless they're carefully preserved they'll eventually rot away, but the remnants of his healing factor may slow the process. Exact details of when they'll lose their connection to his healing factor vary by continuity/time period/random other factors, but it'll happen eventually.