Hello, I would try to remove the automatic generation of hemp by the server to prevent my players from finding hemp in nature

Try this https://umod.org/plugins/component-blocker

https://umod.org/community/rust/9088-stopping-hemp-and-small-pickups-on-the-ground-from-spawning?page=1#post-4

Bear in mind that Component Blocker will completely block hemp everywhere, so you won't be able to have a hemp shop for example.