MQ, just one small correction. The highest concentration of CBD available comes from strains grown for flower, not the oil seed. to get a full spectrum, CBD rich extraction the females are cultivated to produce a flower, just like those grown for THC. The arial parts of the plant, including the flower are then extracted via high pressure co2 methods to fractionally separate the desired compounds such as CBD. This extraction may be further refined to achieve a distillate containing nothing but CBD and 0 THC.
Couple of other things on the last few posts regarding CBD. The lack of CBD on the labels of CBD products on Amazon is due to their policy regarding CBD. You can't say it contains CBD on the label, because they acknowledge that it isn't technically legal under the CSA of 1970 which does not distinguish between any part of the Cannabis Sativa species including both industrial hemp and strains containing higher levels of THC.
The 2014, 2015 farm bill allows pilot programs in states to grow Cannabis Sativa sub species referred to as Industrial Hemp with less than .3% THC. Thus the conflict between these two pieces of legislation I posted about a few weeks ago, especially when shipping across state lines.
This is a grey market outside of states that have recreationally legalized Cannabis S.
Btw, my point above was that at least most of these products do contain levels of CBD per dose of between 8 and 35 milligrams of full spectrum oil containing up to 80% CBD.