The Flowersticks are designed to hold up to 0.15 grams of ground dry herb, however you can fill it with less if you choose and you do not need to be measuring it. The Omura system is designed to consume small amounts of flower very efficiently and more frequently. This allows you to remain in better control of your experience. If you would like a stronger experience then you can have a 2nd or a 3rd Flowerstick, much as you would do when consuming alcohol.