The CBD-crew quality standard offers growers/patients 100% CBD-rich seeds: all seeds germinated are CBD-rich. For the strains that also produce THC: we aim to have THC in a 1:1 ratio with CBD. To know if you really have a perfect 1:1 you'll need to test a sample of your flowers. When testing large populations of seeds (for example 100 seeds of the same variety producing both THC and CBD), we noticed that the average results tend to show a 1:1 ratio, ranging from 1:0.5 to 1:2 Tested products. All products sold under the CBD-crew logo have been tested accurately and have been grown in natural conditions. Its not always possible to use only natural products to grow our seeds, for example when we want to produce feminized seeds, but we try to serve patients with their requests, for them we are ready to do exceptions. CBD-crew was created to help patients grow Cannabis varieties that are CBD-rich. Project CBD, a California based non-profit educational service dedicated to promoting and publicising research into the medical utility of cannabidiol (CBD).