Well, CBD Oil might not be the strongest method compared to smoking CBD Cannabis Strains. Do you love to smoke it up? well then CBD seeds will be a great choice for you. Smoking CBD strains is surely one of the fastest methods for getting CBD inside of your system, great immediate effects that are much stronger than CBD Drops and CBD e-liquid. Be aware that while strains with over 18% of THC are considered strong, CBD levels of 4%+ are considered pretty high. Let’s get right to it, here are top 5 highest CBD seed strains for 2018.