Critical Mass
Mr. Nice Seeds' production beast — the heaviest-yielding indica-dominant hybrid in the classic catalogue.
Full ProfileExplore 79+ detailed strain profiles, expert growing guides from seed to harvest, the fascinating 10,000-year history of cannabis, and a full breakdown of legal status in every country on Earth.
From genetics to history, from your grow room to the laws of the land.
A random selection from our full database
Mr. Nice Seeds' production beast — the heaviest-yielding indica-dominant hybrid in the classic catalogue.
Full ProfileA zesty, energising hybrid descended from two select Skunk phenotypes with exceptional lemon expression, bred by DNA Genetics and Green House Seeds.
Full ProfileAn accidental masterpiece — resin production so extreme it clogs scissors and stuns experienced growers.
Full ProfileA pungent, powerful hybrid from Gorilla Glue #4 and Cookies and Cream that delivers an intense body-heavy relaxation with a fuel-and-vanilla aroma.
Full ProfileTropical banana sweetness meets OG earthiness in a flavourful, relaxing indica hybrid.
Full ProfileGG4 × GSC in an autoflowering format — a high-THC automatic that punches well above its size.
Full ProfileCannabis (Cannabis sativa L.) is one of humanity's oldest cultivated plants. Archaeological evidence places its use in China more than 10,000 years ago, initially for fibre and food before its psychoactive and medicinal properties were widely recognised.
Today, cannabis is understood through its three primary species — Cannabis sativa, Cannabis indica, and Cannabis ruderalis — each producing distinct chemical profiles dominated by cannabinoids such as THC (Δ9-tetrahydrocannabinol) and CBD (cannabidiol). THC is responsible for the well-known psychoactive effect, while CBD has attracted enormous scientific interest for its non-intoxicating therapeutic potential.
Modern cannabis breeding has produced thousands of hybrid strains, each engineered or selected for specific cannabinoid ratios, terpene profiles, growth characteristics, and yield. Our strain database documents the most important and popular of these — from legendary classics like OG Kush and Northern Lights to cutting-edge modern cultivars like Runtz and Gelato.