High THC Seeds

What are high-THC cannabis seeds?

THC (tetrahydrocannabinol) is the main psychoactive cannabinoid in the cannabis plant. High-THC cannabis seeds come from genetics specifically selected for maximum THC production. While standard strains usually sit between 15 and 20%, the strongest strains in the Pyramid Seeds range reach 25 to 30% THC — with Tutankhamon lab-verified as high as 33%. How much of that genetic potential ends up in the buds depends on light intensity, nutrition and, above all, the right harvest timing.

THC classes — which potency suits you?

The strongest Pyramid Seeds strains

How to get the maximum potency

Even the strongest genetics only reach their full THC potential under the right conditions:

• Light intensity — high-power LED or HPS at full output through the whole flowering stage. Too little light is the biggest potency killer.
• Harvest timing — the most important factor. Check trichomes daily from week 7 with a loupe: milky-white trichomes = THC peak, amber = THC degrading to CBN. For maximum potency, harvest at 70–80% milky.
• Late-flowering nutrition — boost phosphorus and potassium; these strains are bred for heavy resin production.
• Slow drying — dry at 15–18 °C (59–64 °F). Heat and fast drying destroy THC and terpenes.

Why Pyramid Seeds for strong strains?

• Germination guarantee on all strains — direct from the breeder
• Lab-verified up to 33% THC — Tutankhamon, measured by Energy Control (Spannabis 2011), reconfirmed in 2024
• Over 20 years of breeding experience — in-house breeding programs, proven genetics
• Worldwide shipping — fast and discreet, straight from the breeder

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Disclaimer: this information is for educational purposes only and does not constitute medical advice. Always follow the laws of your country.