Will i be thought on how to harvest Siberian herbs on that tour?

It is not a prime target of the tour, nevertheless, your guide will show you some unique Siberian herbs of that area, will teach you some specifics of harvesting it and give you some basic information on medical usage and application. If you wish to receive deeper knowledge on it, please request the extension (see the itinerary extension) of that tour that focused on herbalism and harvesting those.