Atomic Seeds

Atomic feminized seeds follow a photoperiod cycle with an 8–9 week flowering window and deliver the strain's peak yield potential — up to 500g/m² indoors and 600g/plant outdoors. Five of the six seedbanks carrying Atomic stock the feminized version, so you have the most purchasing options there. Atomic autoflower seeds, available through Cannabis Seeds Store, run 8–10 weeks from seed and yield slightly less, but they're not dependent on light schedule changes, making them a practical choice for growers who want faster turnaround or run multiple cycles per year. The core {ChemDawg x OG Kush} x THC Bomb genetics carry through both formats.

Atomic seeds are verified at 22–26% THC, placing them firmly in the upper tier of high-THC seeds on the market. That range reflects variation across phenotypes and growing conditions, so individual plants may express differently within that window. If hitting the top of that range matters to you, buying from Bomb Seeds — the original THC Bomb breeder — gives you the highest confidence in genetic authenticity. When comparing Atomic across seedbanks, check whether THC figures are breeder-stated or independently lab-tested, as this affects how much weight to give the numbers.

Atomic is officially rated beginner-friendly, which is notable given its 22–26% THC output — high-potency strains often come with more demanding genetics. For first-time buyers, this means you're not paying a premium for seeds that require expert management to perform. The 8–9 week flowering time (or 8–10 weeks for the autoflower) is also on the shorter end, reducing the commitment window per grow. If you're buying your first batch of indoor seeds or outdoor seeds in this THC category, Atomic is a lower-risk entry point than many comparable high-THC hybrids.

You can buy Atomic seeds from six seedbanks: Seedsman, Linda Seeds, Bomb Seeds, Zamnesia, Herbies Headshop, and Cannabis Seeds Store. All six carry the feminized version except Cannabis Seeds Store, which specializes in the autoflower format. Seedsman and Herbies Headshop are strong starting points for price comparison on feminized packs, while Bomb Seeds is the recommended source if breeder-direct genetics are the priority. All listed seedbanks ship internationally, though delivery options and stealth packaging policies vary — check each seedbank's shipping page for your region before placing an order.