High THC Seeds

The strongest cannabis seeds available at Seed Supreme include Gary Poppins Auto and Garlic Juice Auto (over 30% THC) along with Bruce Banner, Girl Scout Cookies, and Wedding Cheese Cake Auto (25–30% THC). At Seed Supreme, we’re always expanding our catalog, so the best way to find the highest THC seeds is to use the THC filter on this page.

Yes, autoflowering high THC seeds are just as potent as photoperiod feminized seeds, with many of the highest THC auto seeds landing at 25–30% THC. Remember, grow conditions, plant phenotype, and harvest timing all affect the final THC levels.

While uncommon, cannabis seeds with over 30% THC do exist, like Gary Poppins Auto and Garlic Juice Auto. Listed THC numbers typically represent the ceiling, since final THC percentages are affected by variables like grow conditions, harvest timing, and phenotype.