The 10 strongest strains 2026
Maximum potency in 2026: up to 30 % THC. The heaviest hitters — with honest dosing tips.
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
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.