Certain monsters drop specific peculiar seeds. I was just hunting wisps and I'm getting the wrong seeds from them. This page shows the seeds that drop and from which monsters:
https://uo.com/wiki/ultima-online-wiki/gameplay/crafting/plant-growing/fragrant-and-peculiar-seeds/
Here are the screenshots of which seeds I got from the wisps just now. When they are first looted, they are unidentified as "A Peculiar Seed." I used poppies dust to identify them in my pack.

Compared to the chart, wisps should be dropping Group 4 seeds for cattails, poppies, spider trees, and water lilies, not seeds from Group 3.
This is the first incorrect seed drop I've noticed from monsters, but there may be more issues with other seed groups.
https://uo.com/wiki/ultima-online-wiki/gameplay/crafting/plant-growing/fragrant-and-peculiar-seeds/
Here are the screenshots of which seeds I got from the wisps just now. When they are first looted, they are unidentified as "A Peculiar Seed." I used poppies dust to identify them in my pack.

Compared to the chart, wisps should be dropping Group 4 seeds for cattails, poppies, spider trees, and water lilies, not seeds from Group 3.
This is the first incorrect seed drop I've noticed from monsters, but there may be more issues with other seed groups.