A handful of breeders focus on preserving old genetics rather than chasing THC records, keeping lines that would otherwise vanish from the market. These heirloom packs often test moderately but carry aromas and effects not found in modern hybrids. The preservation breeders directory on https://potentthcseeds.com (https://potentthcseeds.com) highlights who is maintaining which historic lines and how limited their releases are. For growers interested in more than potency numbers, this corner of the market is worth exploring.