The 10 strongest strains 2026
Maximum potency in 2026: up to 30 % THC. The heaviest hitters — with honest dosing tips.
TL;DR: Top 3: Permanent Marker (25–30 %), Jealousy (24–30 %), Bruce Banner (24–29 %). Higher potency = smaller dose. Not for beginners.
How we rated
Ranked by median THC (lab reports 2024–2026), consumer reviews and availability. Only strains ≥ 22 % median THC.
Top 10 strongest
1. Permanent Marker — 25–30 % THC, Leafly Strain of the Year 2023
2. Jealousy — 24–30 %, Leafly Strain of the Year 2022
3. Bruce Banner — 24–29 %, cerebral hard-hitter
4. Runtz — 24–29 %, balanced, tropical-creamy
5. Gorilla Glue #4 — 24–28 %, resinous, heavy body
6. Wedding Cake — 22–27 %, indica-vanilla-earth
7. Lemon Cherry Gelato — 23–27 %, hype-fruit potent
8. London Pound Cake — 22–27 %, deep body-relax
9. Gary Payton — 20–25 %, creative-focused
10. Ice Cream Cake — 20–25 %, dessert-sweet, relax
For beginners: aim at 12–18 % THC or CBD-balanced strains.
FAQ
Strongest 2026?
Permanent Marker up to 30 %.
More THC = better?
No — also depends on terpenes and tolerance.
Available in Switzerland?
High-THC officially via pilot projects or prescription.
Dosing?
≥ 25 % THC: small puffs, 10 min pause.