So... I have the same issue. Mine is 210. I am on EU Avalon.
I, though, noticed that if you right click on the herbs and select +1, rather then the other option that looks like a 'die side' with 5 dots on it - He will gather the herbs.
Since I found the second (die) option later, (new guy here) I have no clue what the window is for and what that '5 die' option is meant to do.