Dragon's Blood Reed is not Herb Robert, for sarters.
Herb Robert is a wild geranium, Geranium robertianum. It has a neat aroma, kinda bitter-sweet.
Dragon's Blood is the dried sap of the Dragon Palm, a type of palm tree. The sap may be collected and formed into many shapes, just as maple syrup, another tree sap, is made into several forms of candies. Different cultures have differing traditions regarding these shapes. In China, the resin is formed into balls. In Yemen it is allowed to harden in bread pans. In times past, it was considered a very classy way to form it by laying it in a palm leaf or bambooo and making a reed-like stick of it. Each small reed was then individually wrapped and tied in palm fronds. This was sold as Dragon's Blood Reed for many, many decades. It is no longer made, as the areas where it came from are simply overwhelmed with wars, overpopulation, industrialization, and inhumane lack of artistry.