You will lower returns on the training herbs though with your herbalism level(allods online gold) up. And it is best to grab herb spawns whenever you see them while questing. This will level you up a little faster and since you are doing other things at the same time it won't be as boring.
As most player know that Herbalism is hard to level in Allods, you can gather and 50% of the nodes in the area you can't even gather when you only get skill ups from about 50% of the nodes. The problem is the range of quality on the herbs, the lower level quality produce no skill-ups and the highest quality you likely can't gather. Mining on the other hand only has one quality of reagent in a given area, so you can collect them as long as you meet the minimum requirement.
You cant level herbalism while questing, Allods Gold just went up to slow. Then you need to go back and collect stuff from the previous zone and it takes hours to get a dozen or so levels in Herbalism. On the plus side this is about the easiest craft to do the daily supplies quest for reputation, just do it early.
It's always slow to gain the last 10 levels in group.Such like from 130 -140 feels like it takes for ever, then once 140 it is fast at start, like every time you gather for the first 10 levels is a new level, then you get to like 190 and it's back to taking forever to get another level. Then you hit 200, you can gather in A-T and it is like each Noe gains you an level(Allods Online Gold).