818 Headband
Cannabis seeds
by The Cali Connection
818 Headband Feminized Cannabis Seeds by Cali Connection
818 Headband is a feminized hybrid cannabis seed strain from Cali Connection that took 1st place in the hybrid category at the 2010 High Times Medical Cannabis Cup Michigan. Bred by crossing Original Sour Diesel with a San Fernando Valley OG Kush IBL male, this strain — also known as Sour OG — delivers up to 800g/m² after just 8-9 weeks of flowering. The "818" is an area code nod to the San Fernando Valley, and the genetics live up to that Californian pedigree.
Genetics Behind 818 Headband Seeds
The cross is straightforward and potent: Swerve from Cali Connection took his Original Sour Diesel mother and pollinated her with a San Fernando Valley OG Kush IBL (inbred line) male. An IBL male means the genetics have been stabilised through multiple generations of inbreeding — you get consistent expression rather than a genetic lucky dip. The Sour Diesel side brings that unmistakable fuel-forward, sour profile, while the SFV OG Kush contributes the dense bud structure and that classic OG backbone.
The result is a hybrid that leans neither too far indica nor too far sativa. Growth structure is strong and well-branched, producing huge, elongated, bright green colas. If you've grown OG Kush crosses before, you'll recognise the resin production — but the Sour Diesel parentage pushes yields well beyond what most OG-dominant plants manage.
Yield and Flowering Time for 818 Headband
Up to 800g/m² indoors with an 8-9 week flowering period — those are the numbers that make growers look twice. For a hybrid with OG Kush in its lineage, that yield is genuinely impressive. Most OG crosses top out around 400-500g/m², so 818 Headband is pulling nearly double what you'd expect from that gene pool.
The 8-9 week window is manageable for most indoor setups. She responds well to SOG and SCROG methods thanks to her branchy growth pattern, and those elongated colas fill out a canopy nicely without needing excessive training. One thing to watch: the buds get properly dense and heavy in the final two weeks. Support your branches. We've seen growers lose colas to snapping in the home stretch — a simple bamboo stake or trellis net saves you from that heartbreak.
| Specification | Detail |
|---|---|
| Seed Bank | Cali Connection |
| Seed Type | Feminized (photoperiod) |
| Genetics | Original Sour Diesel x San Fernando Valley OG Kush IBL |
| Also Known As | Sour OG |
| Type | Hybrid |
| Flowering Time | 8-9 weeks |
| Indoor Yield | Up to 800g/m² |
| Seeds Per Pack | 6 |
| SKU | CSCA0016 |
| Awards | 1st Place Hybrid, 2010 High Times Medical Cannabis Cup Michigan |
Flavour and Aroma Profile of 818 Headband
Open a jar of dried 818 Headband and the first thing that hits you is fuel. Not subtle, not background — proper diesel funk that fills the room. Underneath that initial blast sits a sharp sourness, like citrus peel left in the sun, courtesy of the Sour Diesel mother. The OG Kush side rounds things out with an earthy, almost piney undertone that keeps it from being one-dimensional.
The buds themselves are dense, sticky, and coated in trichomes. Bright green with that slightly lime-coloured hue you see in well-grown Diesel crosses. When you break them apart, the aroma intensifies — that fuely sourness gets louder and clings to your fingers. If discretion is your thing, this is not your strain. Your carbon filter earns its keep with 818 Headband.
Growing 818 Headband Seeds — What to Expect
These feminized seeds produce a plant with a solid, well-structured frame that handles its own weight better than most OG crosses — up to a point. The branching is generous, which makes her a natural fit for SCROG setups where you want to fill a horizontal canopy. In SOG, she stays compact enough to run 9-16 plants per square metre without crowding.
- Germinate your 818 Headband seeds using the paper towel method or directly in a starter plug. Taproots typically emerge within 24-72 hours.
- Transplant seedlings into their final containers once the first true leaves appear. She responds well to 11-15 litre pots for indoor growing.
- Veg for 3-4 weeks under 18/6 lighting. The branchy structure develops quickly — top or FIM early if you want to maximise cola sites.
- Flip to 12/12 to initiate flowering. Expect noticeable stretch in the first 2 weeks, typical of Diesel-influenced genetics.
- Support branches from week 5 of flower onwards. The elongated colas pack on weight fast, and snapping is a real risk without stakes or netting.
- Harvest at 8-9 weeks of flowering. Check trichomes with a loupe — milky with 10-20% amber is the sweet spot for most growers.
- Dry in a dark, ventilated space at 18-21°C and 55-60% humidity for 7-10 days, then cure in glass jars for at least 2 weeks.
The honest limitation here: she stinks. From mid-flower onwards, the diesel and sour terpenes are aggressive. A quality carbon filter and proper negative pressure in your grow space are non-negotiable. If you're running a tent in a shared flat, factor in the odour control setup before you pop these seeds.
Why 818 Headband Deserves a Spot in Your Grow
There are plenty of OG Kush crosses on the market. Most of them give you flavour and potency but leave you wanting on yield. That's the gap 818 Headband fills. You get the fuel-forward, sour terpene profile that Cali genetics are famous for, paired with a harvest that can genuinely hit 800g/m² in the right hands. The 2010 High Times Medical Cannabis Cup win wasn't a fluke — it was recognition that Swerve nailed the cross.
Compared to something like Cali Connection's Original Sour Diesel (which is also in our catalogue), 818 Headband trades a touch of that pure Diesel sharpness for better structure and significantly higher yields. If you're after the classic Sour D experience and don't care about weight, go Original Sour Diesel. If you want the best of both parents with a harvest that actually fills your jars, 818 Headband is the smarter pick. We'd choose this one nine times out of ten for a dedicated indoor run.
According to research published in Pharmacotherapy, THC (the primary psychoactive cannabinoid in cannabis) has been the subject of extensive pharmacological study, with clinical effects documented across multiple therapeutic contexts (Borgelt et al., 2013; PubMed ID: 23386598). The varied cannabinoid and terpene profile of strains like 818 Headband — with its fuel-forward, sour, and earthy aromatic compounds — contributes to what researchers hypothesise as the entourage effect, where multiple plant compounds may interact synergistically.
Running 818 Headband in a tent? Pair it with a quality carbon filter to handle the diesel funk — the strain's aroma is intense from mid-flower onwards. If you're building a Cali Connection garden, the Original Sour Diesel and SFV OG Kush seeds make natural companion grows, letting you compare the parent genetics side by side.
818 Headband Compared to Similar Strains
| Strain | Genetics | Flowering Time | Indoor Yield | Aroma |
|---|---|---|---|---|
| 818 Headband (Sour OG) | Sour Diesel x SFV OG Kush IBL | 8-9 weeks | Up to 800g/m² | Fuel, sour, pine |
| Original Sour Diesel | Sour Diesel selection | 10-11 weeks | Up to 500g/m² | Sharp diesel, citrus |
| SFV OG Kush | OG Kush IBL | 8-9 weeks | Up to 450g/m² | Earthy, pine, lemon |
The comparison tells the story clearly. 818 Headband inherits the faster flowering time from its OG Kush parent while dramatically outperforming both parents on yield. You sacrifice roughly 1-2 weeks compared to the longer-flowering Sour Diesel, but you gain 300g/m² in return. That's not a trade-off — that's a straight upgrade for indoor growers who value efficiency.
Frequently Asked Questions
What is 818 Headband, and why is it also called Sour OG?
818 Headband is a feminized hybrid strain by Cali Connection, bred from Original Sour Diesel crossed with San Fernando Valley OG Kush IBL. The name "Sour OG" reflects both parent strains. The "818" references the San Fernando Valley area code — a nod to Cali Connection's home turf.
How long does 818 Headband take to flower?
Flowering takes 8-9 weeks from the flip to 12/12 lighting. Check trichome colour with a jeweller's loupe to dial in your preferred harvest window — milky trichomes with some amber is the standard target.
Is 818 Headband a heavy yielder?
Yes. Up to 800g/m² indoors, which is exceptional for an OG Kush hybrid. Most OG crosses yield 400-500g/m², so 818 Headband roughly doubles that thanks to the Sour Diesel mother's vigour and branchy growth structure.
Does 818 Headband smell strongly during flowering?
Extremely. The diesel and sour terpenes are aggressive from mid-flower onwards. A carbon filter with proper negative pressure in your tent or grow room is essential — without one, the entire building will know what you're growing.
What growing method works best for 818 Headband?
SCROG is the natural fit — her branchy structure fills a horizontal canopy efficiently. SOG also works well at 9-16 plants per square metre. Either way, support branches from week 5 of flower to prevent snapping under the weight of dense colas.
How many seeds come in a pack of 818 Headband?
Each pack contains 6 feminized seeds. Since they're feminized, you won't need to identify and remove males — every seed should produce a flowering female plant.
Has 818 Headband won any cannabis awards?
It took 1st place in the hybrid category at the 2010 High Times Medical Cannabis Cup in Michigan. That's a competitive field, and the win put Cali Connection's Sour Diesel x OG Kush cross on the map.
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.