After surveying the herb selection we realized that 1 average size bunch of rosemary weighs about 1 ounce and contains about 22 sprigs. We decided to use a 1 ounce medium bunch of rosemary for our how many rosemary bunches in a cup testing sample. We then started chopping and found the leaves from 1 rosemary sprig yielded 3/4 teaspoon. In order to reach the 1 cup mark, you would need to chop 3 bunches of rosemary.