Well, I used to pick to one but Myth convinced me that picking to 2
was a better idea so I pick to 2 now. I don't see any real reason
to leave more herbs or poisons in a location because that would
mean someone other than myself would be picking them and I
generally consider herbs and poisons in the hands of people
other than myself to be a bad thing.
I really don't think you'll have much luck in getting people to do
as you wish concerning herbs and poisons. It's their skill, they worked
for it, and no one should be telling anyone how to use it.
P. S. I did pick some wurtfoil to zero recently though I suppose.
Written by my hand on the 4th of Cloudburst, in the year 1152.