Great White Shark
Cannabis seeds
by Greenhouse Seeds
Great White Shark Cannabis Seeds by Greenhouse Seeds
Great White Shark is a feminised cannabis seed variety from Greenhouse Seeds that crosses White Widow (Brazilian x South Indian) with Super Skunk — producing a short, bushy plant loaded with resin and backed by a cannabinoid profile that goes well beyond just THC. With 22.94% THC, 1.7% CBD, and 0.8% CBN, this is one of the few strains in the White family that brings genuine cannabinoid diversity to the table. She's won multiple Cannabis Cups and yields up to 800g/m² indoors, making her a serious producer for growers who want weight and quality in the same harvest.
Which Pack Size?
Great White Shark feminised seeds come in packs of 3, 5, or 10. If you're running a single ScrOG setup, 3 seeds is enough to find a keeper. For a full SOG run or outdoor grow where you want backup plants, grab the 10-pack — you'll use them. The 5-pack sits in the middle for growers who want a proper selection run without committing to a full tray.
Why Great White Shark Seeds Stand Out
Most strains in the White family are THC-heavy one-trick ponies. Great White Shark breaks that pattern. The 1.7% CBD is unusually high for a photoperiod strain that still hits 22.94% THC — that's a ratio you'd normally only find in purpose-bred CBD crosses. Add 0.8% CBN (a cannabinoid associated with the sedative side of aged cannabis) and you've got a profile that feels noticeably different from a standard White Widow or Super Skunk. The high is full-bodied rather than sharp. Think of it as the strain you reach for after a long day when you want to properly switch off rather than just get wired.
Greenhouse Seeds bred this one to be practical, too. She's short and bushy with strong branches — the kind of structure that fills a ScrOG net evenly without constant training. The Super Skunk genetics give her thick stems that hold up heavy buds without support stakes, which is a genuine time-saver compared to leggier White Widow phenotypes. We'd pick Great White Shark over a standard White Widow for any indoor setup under 1.2m height, because she stays compact and still delivers massive yields.
The honest downside? She's leafy. Trimming takes noticeably longer than a strain like White Rhino or Super Silver Haze. But those sugar leaves are absolutely caked in trichomes — don't bin them. They're some of the best material you'll find for making concentrates or edibles. Think of the extra trim time as an investment in a second harvest.
Great White Shark Specifications
| Specification | Detail |
|---|---|
| Seed Bank | Greenhouse Seeds |
| Genetics | White Widow (Brazilian x South Indian) x Super Skunk |
| Seed Type | Feminised (photoperiod) |
| THC Content | 22.94% |
| CBD Content | 1.7% |
| CBN Content | 0.8% |
| Flowering Time | 9 weeks |
| Indoor Yield | Up to 800g/m² |
| Outdoor Yield | Up to 1,000g per plant |
| Outdoor Harvest | Early October |
| Plant Structure | Short, bushy, strong branches |
| Recommended Method | ScrOG / SOG |
| Pack Sizes | 3, 5, or 10 seeds |
Award-Winning Great White Shark Genetics
This isn't a strain that won a single cup and rode the hype. Great White Shark has been collecting hardware since the late '90s. Her track record includes a 2nd Place Bio at the High Times Cannabis Cup in 1997, plus a double win at the 2005 Highlife Festival — taking 1st Place in both the Super Cup and Seed Company Hydro categories. That 2005 double is particularly telling: it means she performed at the top in both organic and hydroponic setups, which speaks to how forgiving and adaptable these genetics are.
For growers who care about proven genetics rather than Instagram hype, that competition history matters. These are results judged by panels who've smoked thousands of strains. Great White Shark kept winning because the resin production is genuinely exceptional and the cannabinoid profile delivers something you can feel is different from a standard high-THC variety.
How to Grow Great White Shark Seeds
- Germinate your feminised Great White Shark seeds using the paper towel method or directly in a starter plug. Expect taproots within 24-72 hours at 22-25°C.
- Transplant seedlings into their final containers once they've developed 2-3 sets of true leaves. For ScrOG, use 11-15 litre pots. For SOG, 6-7 litre pots work well with higher plant density.
- Veg for 3-4 weeks under 18/6 light. Great White Shark stays naturally compact, so you don't need aggressive topping — one or two toppings is enough to fill a ScrOG net evenly.
- Flip to 12/12 to trigger flowering. The 9-week bloom period is consistent. Watch for the branches to thicken considerably during weeks 3-5 as buds stack.
- Support isn't usually needed thanks to the Super Skunk branch structure, but in late flower (weeks 7-9) the buds get heavy enough that a trellis net helps keep the canopy even.
- For outdoor grows, plant out after the last frost. She'll be ready for harvest in early October in most European climates, yielding up to 1kg per plant with enough root space and sunlight.
- Harvest when trichomes are 70-80% milky with some amber. Budget extra time for trimming — she's leafy, but those sugar leaves are loaded with resin. Save them for extracts.
Running a ScrOG setup? Pair Great White Shark seeds with a complete grow tent kit that includes lighting, ventilation, and carbon filtration. Her compact structure also makes her an excellent candidate for the Plagron Grow Schedule range — the Alga line works particularly well with these indica-dominant genetics. If you're planning to use those frosty trim leaves, pick up a set of bubble bags or a pollen press to make the most of the harvest.
Great White Shark vs Other White Family Strains
| Trait | Great White Shark | White Widow | White Rhino |
|---|---|---|---|
| THC | 22.94% | ~19% | ~20% |
| CBD | 1.7% | Trace | Trace |
| CBN | 0.8% | Trace | Trace |
| Flowering Time | 9 weeks | 8-9 weeks | 9-10 weeks |
| Indoor Yield | Up to 800g/m² | Up to 450g/m² | Up to 600g/m² |
| Trim Difficulty | High (leafy) | Moderate | Low-Moderate |
| Best For | Full-spectrum cannabinoid profile | Classic resin production | Heavy indica effect |
If you want the most complete cannabinoid profile in the White family, Great White Shark is the clear winner. White Widow is the classic choice for a reason — she's easier to trim and has that legendary resin coat — but she can't match the CBD or CBN numbers. White Rhino leans heavier on the indica side but yields less and takes longer. For pure grams-per-square-metre, Great White Shark's 800g/m² ceiling is hard to beat in this lineage.
What Great White Shark Smells and Tastes Like
The Super Skunk parentage comes through clearly in the nose. During late flowering, expect a thick, skunky funk with an underlying sweetness that's more tropical fruit than candy. When you break open a dried bud, there's a sharp, almost chemical resin smell — the kind that sticks to your fingers and doesn't wash off easily. It's the sort of stink that absolutely demands a carbon filter indoors. Your neighbours will know what you're growing without one.
The buds themselves are dense, pale green, and absolutely plastered in trichomes. That "white" family appearance is unmistakable — they look frosted even from across the room. The calyx-to-leaf ratio isn't great (hence the trimming time), but the quality of what's underneath all that foliage is genuinely top-shelf.
Frequently Asked Questions
Is Great White Shark suitable for beginner growers?
Yes. Her short, bushy structure and strong branches make her forgiving. She doesn't stretch much during flowering and doesn't need heavy training. The only extra work is trimming — she's leafier than average, so set aside more time for post-harvest processing.
What makes Great White Shark different from White Widow?
The Super Skunk cross adds significantly higher yields (800g/m² vs ~450g/m²), a higher THC level of 22.94%, and — most notably — 1.7% CBD and 0.8% CBN that White Widow simply doesn't have. The trade-off is more leaf material to trim.
Can I grow Great White Shark outdoors in Northern Europe?
She finishes in early October, which works for most of the Netherlands, UK, Belgium, and northern France. In Scandinavia or at altitude, the timing gets tight. If your autumns turn wet before mid-October, she'll usually make it — but watch for mould on those dense buds in the final weeks.
How much does Great White Shark yield outdoors?
Up to 1,000g (1kg) per plant with full sun, good soil, and enough root space. In a 50-litre pot on a balcony, expect less — around 300-500g. She's a heavy feeder outdoors, so don't skimp on nutrients during flowering.
Why is Great White Shark so leafy?
It's the Super Skunk genetics. Skunk lineages tend to produce more leaf material around the buds. The upside is that those leaves are covered in trichomes, making them excellent for extracts, bubble hash, or cannabutter. Don't throw them away.
What's the best growing method for Great White Shark?
ScrOG is the best match for her natural shape — she fills the net evenly with minimal training. SOG also works well with shorter veg times and higher plant counts. Both methods take advantage of her compact structure and heavy side branching.
Does Great White Shark need a lot of nutrients?
She's a moderate-to-heavy feeder, especially during weeks 4-7 of flowering when bud production peaks. A standard cannabis nutrient line at 75-100% strength works well. She handles CalMag supplementation without complaint, which is worth noting if you're growing in coco.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.