These are the seeds of an allegedly common weed but were never implemented in the game.
Ergot does not grow anywhere in game but the seeds can be bought from vendors or found as random loot. The following vendors sell them:
- The Pellar
- Keira Metz
- herbalist in the Refugees' Camp
- herbalist at the Abandoned Site west of Hangman's Alley
- herbalist at Herbalist's Hut outside Oxenfurt