These are the hardest-hitting cuts in the Clones Up catalog, the strains our growers reach for when potency is the whole point. Every clone on this page comes from a verified, HLVD-tested mother and roots female-guaranteed.
If you are selecting for the loudest nose and the most resin-caked flower, start here. We hand-pick this list from the strongest-testing genetics we carry across indica, sativa, and hybrid lines.
Shop by type: All Strains · Indica · Sativa · Hybrid · High-THC
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Growing for potency
Genetics set the ceiling, but finish and cure decide how close you get to it. Give these plants strong light, do not rush the last two weeks of flower, and dry slow. Rushed drying is the fastest way to waste a high-THC cut.
Frequently asked questions
What makes these strains high-THC?
They come from genetics selected and bred for potency. Individual test ranges vary by phenotype and grow, and each strain page notes what we know.
Are high-THC strains harder to grow?
Not necessarily, but they reward attention to finish and cure. Read the grow notes on each strain page.
Are these clones female-guaranteed?
Yes, every one, cut from a verified mother plant.