Hemp seeds sold in health food shops are almost always sterilised or heat treated, and even viable ones come from grain varieties with negligible cannabinoid content. People try sprouting them every year and end up with tall fibrous plants and no usable flower. The explainer on https://calmcbdseeds.com about the difference between food grade hemp seed and cultivation grade CBD seed settles this question clearly. Spending money on proper genetics is the only route to flower with meaningful CBD.