Hammershark

Hammershark Feminised Cannabis Seeds by Resin Seeds

Hammershark is a CBD-rich feminised cannabis strain from Resin Seeds that pairs massive yields with a balanced cannabinoid profile — something most medical strains struggle to deliver simultaneously. A cross between Dieseltronic (3rd place, 2013 High Times Cannabis Cup) and the legendary Shark Shock bred by Shantibaba, Hammershark gives growers the resin production and bag appeal of a top-shelf recreational strain without sacrificing CBD content.

Why Hammershark CBD Seeds Stand Out

Most CBD-dominant genetics come with a trade-off: you get the cannabinoid ratio you want, but the plants produce wispy buds, bland terpene profiles, or frustratingly low yields. Resin Seeds set out to fix that, and Hammershark is the result. The phenotypes that came out of the Dieseltronic x Shark Shock cross surprised even the breeders — vigorous growth, oversized colas, and resin production thick enough to justify the breeder's name.

We've sold Resin Seeds genetics since they first hit the European market, and Hammershark is one of those strains that customers come back to reorder. The appeal is straightforward: you don't have to choose between growing something that looks and smells brilliant and growing something with genuine CBD content. Hammershark does both, and it does them consistently across phenotypes.

The Shark Shock parentage brings West Coast pedigree — the strain is a favourite among musicians and growers on the US West Coast — while Dieseltronic contributes diesel-forward terpenes and that proven CBD backbone. The combination produces plants that change colour depending on grow room temperatures, shifting through greens, purples, and blues across the flowering cycle. Genuinely gorgeous to watch develop.

Hammershark Genetics and Lineage

Hammershark's genetic background reads like a greatest-hits compilation from Resin Seeds. Here's what went into this cross and what you can expect from each parent line.

Dieseltronic brought the CBD genetics and diesel terpene profile. Shark Shock — Shantibaba's creation that built a cult following across California — contributed structure, density, and that unmistakable resin coat. The offspring inherits the best traits from both sides: CBD content from the Dieseltronic line, yield and bag appeal from Shark Shock.

Growing Hammershark Seeds — What to Expect

Hammershark grows vigorously indoors and performs equally well outdoors, which is unusual for a CBD-focused strain. Most medical genetics are bred purely for cannabinoid content and tend to be fussy growers. Hammershark bucks that trend with natural pest and disease resistance that makes her forgiving for less experienced cultivators.

1. Germinate your Hammershark seeds using the paper towel method or directly in a starter plug — feminised seeds means every plant flowers female, no males to cull.
2. Transplant into your chosen medium once the taproot is established. She responds well to both soil and hydro setups.
3. Expect vigorous vegetative growth — these plants stretch and fill out quickly, so plan your canopy management early. Topping or LST works well to control height and encourage multiple cola sites.
4. Flip to 12/12 when your canopy is where you want it. Watch for the colour changes during flower — lower temperatures in the dark period can bring out purples and blues in the foliage.
5. Harvest when trichomes are milky to amber. The oversized colas pack on weight in the final weeks, so support branches if needed to prevent snapping.

One honest note: the pack contains 3 seeds, not 5 or 10. For a CBD strain you're planning to run long-term, you might want to grab two packs so you can pheno-hunt properly and find the keeper that suits your setup. The phenotype variation is part of the fun — some lean more diesel, others more sweet — but having more seeds to work with gives you better odds of finding your ideal plant.

Aroma and Resin Profile

This is where Hammershark genuinely surprises. Most CBD strains smell like hay or, at best, vaguely herbal. Hammershark smells like an actual cannabis plant worth growing — diesel fuel on the inhale with a sweet, complex undertone from the Shark Shock side. The terpene profile is rich enough that you'd never guess this was a CBD-dominant strain from the nose alone.

Resin production is extreme. The name "Resin Seeds" isn't accidental — their entire breeding programme prioritises trichome density, and Hammershark delivers. Colas come out coated in a thick layer of sticky resin, which matters if you're planning extractions or concentrates from your CBD harvest. More resin means more cannabinoids per gram of flower, and that translates directly into more potent CBD preparations.

Hammershark vs Other CBD Strains

The CBD seed market has exploded in the last few years, so why pick Hammershark specifically? Here's how she stacks up against the common alternatives.

The short version: most CBD strains ask you to compromise. Hammershark doesn't. She yields like a commercial strain, smells like something you'd actually want to grow, and coats herself in enough resin to make extraction worthwhile. The only real compromise is the 3-seed pack size — we'd love to see Resin Seeds offer a 5-pack option.

Who Should Grow Hammershark Seeds

Hammershark works best if you're specifically after CBD-rich flower and you refuse to settle for the underwhelming yields and bland flavours that come with most medical genetics. She's also a strong pick for growers who want a visually striking plant — the colour changes through flower are genuinely impressive, and the resin-caked colas photograph beautifully.

If you're new to growing CBD strains, Hammershark is a forgiving starting point. The natural pest resistance means fewer interventions, and the vigorous growth habit means she'll bounce back from beginner mistakes that would stunt a fussier strain. We've had customers tell us she was the easiest CBD plant they'd ever run — and the heaviest yielder by a wide margin.

Frequently Asked Questions

Last updated: April 2026