Founded by underground breeders in Northern England in the late 1980s, G13 Labs later made Spain their home base—where their passion for cannabis genetics matured into a world-class seed bank. Though shrouded in mystery, their roots run deep, especially through their collaboration with legendary U.S. breeder Ken Estes, the man behind the iconic Granddaddy Purple—a multiple award-winning indica known for its rich grape aroma, resin-soaked buds, and heavy body effects.
Today, G13 Labs offers a carefully curated selection of feminized cannabis strains, built for fast flowering, heavy yields, and strong resistance—ideal for both indoor and outdoor growing in South African climates. With a focus on stable genetics and stand-out terpene profiles, G13 Labs strikes a perfect balance between old-school pedigree and modern breeding innovation.
Whether you're after high THC levels, medicinal value, or just a no-fuss grow with standout flavour, G13 Labs delivers. Overgrow is proud to stock their elite lineup—reliable seeds with legendary roots, grown for the next generation of cultivators.