Once a bag of herbals or flowers is opened, The herbals could be kept in ambient and dry conditions such as in the living room, the study or the office, but it must be completely away from light, moisture, smell and heat. An airtight container or a vacuum tank is an ideal storage solution.
Sealed Clips are also a good choice for opened packaging bags.
The quality of the herbals lasts longer if they are kept in the fridge. But please make sure the package is sealed and cover with a box to insulate from temperature change. In addition, if the bag is taken in and out from the fridge very often, this will cause heat stress to the herbals as temperature is increased and decreased very frequently. Air will be drawn from outside and condensation will occur. That is why we packed our herbals into small sealed packaging bags instead of large bags or boxes. You could open a small bag of the herbal and enjoy its freshness while the other bags are sealed and well kept in the fridge.