Picking Herbs

Picking refers to actively searching out a specific herb by tracking through the environment and looking for signs of where the herb may be. This may only be done as a downtime activity.
  In order to go picking for a herb, a player must declare which herb they are looking for and then spend the next 8 hours attempting to find it, at the end of which they may make a DC 25 Wisdom (Survival) check. A player may only attempt to pick a herb that is in the same environment table as the environment the player is currently in.
  On a success they find the herb they were looking for. On a failure, it is deemed that the herb cannot be found in the local area and they must travel for a full day before they, or anyone in their party, may attempt to pick the same herb again.