Damn Sour is a feminised Greenhouse Seeds hybrid that crosses S.A.G.E. with Sour Diesel — a high-yielding strain bred for sour-citrus flavour, dense resinous buds, and serious output in hydroponic setups. Expect 600–700g/m² indoors after 8–9 weeks of flowering, and up to 800g per plant outdoors when reared right.
Why Damn Sour earns its name
Greenhouse crossed two breeder favourites and ended up with a strain that genuinely tastes like its parents — not always a given in hybrid work. S.A.G.E. (Sativa Afghan Genetic Equilibrium) brings the balance, the hardiness, and that pleasant sandalwood-floral-citrus aroma. Sour Diesel brings the loud, lemony, fuel-sour punch that made it a staple on the US East Coast. Damn Sour is what happens when you put those two in the same tent: an intensely sour nose with a berry undertone that lingers on the exhale.
On the cannabinoid side, properly cured Damn Sour buds sit around 17% THC with CBD close to 1%. Not a record-breaker on paper, but the terpene load does the heavy lifting — this is a strain where the flavour and aroma are as much the point as the potency.
Pack size — which variant should you grab
| Pack | SKU | Best for |
|---|---|---|
| 3 seeds | CSGH0040 | A test run — see if she likes your room before committing |
| 5 seeds | CSGH0041 | Standard tent-filler for a 60x60 or 80x80 ScrOG |
| 10 seeds | CSGH0042 | Proper hydro run, or a staggered-schedule grower who wants backups |
If it's your first Greenhouse strain, we'd start with 3. If you already know your room and your EC numbers, 10 is better value per seed.
Grow specs — what to expect from Damn Sour
Damn Sour performs best in a ScrOG setup on high EC levels and can achieve the strongest results in a hydro system. Indoors on soil you're looking at 600–700g/m²; switch to hydro and you'll push closer to 700g/m² consistently. Outdoors she's ready by early October and each plant can carry up to 800g of smokeable flower — but only if you prune early to force a bushier, wider structure.
| Spec | Value |
|---|---|
| Breeder | Greenhouse Seeds |
| Genetics | S.A.G.E. × Sour Diesel |
| Sex | Feminised |
| THC | ~17% |
| CBD | ~1% |
| Flowering time | 8–9 weeks |
| Indoor yield (soil) | 600–700g/m² |
| Indoor yield (hydro) | ~700g/m² |
| Outdoor yield | Up to 800g/plant |
| Outdoor harvest | Early October |
| Aroma | Sandalwood, flowers, citrus, sour fuel, berry hints |
| Pack sizes | 3 / 5 / 10 seeds |
Growing Damn Sour — what the breeder says
This is not a set-and-forget strain. Greenhouse is direct about it: Damn Sour wants a ScrOG, she wants high EC, and late in flowering she'll need branch support or the buds will bend the stems. The flowers get dense, heavy, and very resinous — which is good news for the jar and bad news for unsupported side branches.
- Germinate in your preferred medium (paper towel, plug, or straight into rockwool for hydro runs).
- Indoors: train onto a ScrOG screen during veg. Outdoors: top and prune early to encourage a wider, bushier frame.
- Run higher EC levels than a standard autoflower — this strain feeds hard.
- Switch to 12/12 and count on 8–9 weeks of flowering.
- Stake or net the branches by week 5 of flower. The buds get genuinely heavy.
- Harvest, dry slow (15–18°C, 55–60% RH), and cure in jars for at least 2 weeks before the sour-citrus profile really opens up.
Flavour, aroma, and what makes her different
The aroma during grow is actually less aggressive than you'd expect from a Sour Diesel cross — sandalwood, flowers, and citrus, rather than pure fuel-skunk. That shifts in the cure. Properly dried and jarred, Damn Sour develops the intense sour-lemon bite her name promises, with berry notes underneath that most Sour Diesel crosses don't have. That berry character is the S.A.G.E. influence showing up.
Honest limitation: 17% THC is mid-range by 2026 standards. If you're chasing the highest numbers on the shelf, there are stronger Greenhouse strains (Super Lemon Haze, Arjan's Haze lineup). Damn Sour's selling point is flavour and yield, not raw THC percentage. Grow her for the terpenes.
Compared to other Greenhouse sour strains
| Strain | Flavour profile | Flower time | Indoor yield |
|---|---|---|---|
| Damn Sour | Sour citrus + berry + sandalwood | 8–9 weeks | 600–700g/m² |
| Super Lemon Haze | Sweet lemon, candy | 9–10 weeks | 800g/m² |
| Sour 60 | Sour fuel, classic Diesel | ~8 weeks (auto) | 450–500g/m² |
Damn Sour sits between the two: more complex than a pure Sour Diesel-style auto, quicker and more manageable than a long-flowering Haze.
Complete your setup: pair Damn Sour seeds with a ScrOG net and a decent carbon filter — this strain's aroma gets loud in late flower, and a 600g/m² run in a 1m² tent will absolutely announce itself without filtration. A quality pH/EC meter is also worth it given how hard she feeds.
Frequently Asked Questions
Is Damn Sour suitable for beginners?
She's manageable but not the easiest. The ScrOG requirement, high EC feeding, and need for branch support in late flower mean first-time growers will have a steeper learning curve. Workable — just read up on low-stress training first.
Indoor soil or hydro — what gets better results?
Hydro, by a clear margin. Greenhouse reports astounding results in hydro systems, with yields pushing closer to 700g/m² versus 600–700g/m² on soil. If you've got the kit, run her in hydro.
How does Damn Sour smell during flowering?
Sandalwood, florals, and citrus during grow — less punchy than most Sour Diesel crosses. The proper sour-lemon-with-berries flavour develops during the cure, not the grow. Still, run a carbon filter.
Why do the branches need support?
The buds get dense, heavy, and very resinous late in flower. Without staking or netting by week 5, side branches can bend or snap under the weight. A ScrOG screen solves this automatically, which is partly why Greenhouse recommends one.
What's the THC level and how does it feel?
Around 17% THC with CBD close to 1%. Mid-range by modern standards — the appeal is terpene complexity and yield, not raw potency. Research on cannabis pharmacology suggests terpene-cannabinoid ratios shape the experience as much as THC alone (Russo, 2011; PMC9919051).
When's the outdoor harvest window?
Early October in the northern hemisphere. Each outdoor plant can carry up to 800g if pruned early for a bushy structure and given enough root space. This guide is written for adults aged 18 and over.
Last updated: April 2026
