It depends on your personal preference and the size of the joint you’re looking to make. Don’t use too much of your preferred cannabis flower, because it could result in uneven burning of the herb. The bigger the joint paper you use, the more cannabis you can pack. In general, between 0.5 and 1.5 grams work well. Newbies can start with 0.3 grams but experiment to find out what works best for you.