Cannabis seeds
by Delicious Seeds
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Northern Light Blue is a 100% Indica feminised cannabis seed from Delicious Seeds that crosses Northern Light with Blueberry to produce compact, resin-heavy plants yielding up to 500g/m² in just 50–55 days of flowering. Three seeds per pack, and every one is feminised — no males to cull, no wasted space.
Two of the most decorated Indica lines in cannabis history went into this cross. Northern Light has been a grower's staple since the 1980s: structurally disciplined, forgiving of mistakes, and absolutely caked in trichomes. Blueberry brought the terpene game — that unmistakable wild berry sweetness that changed what people expected from Indica flavour. Delicious Seeds merged them and kept the best traits from each parent: Northern Light's rock-solid growth pattern and resin output layered with Blueberry's berry-forward nose.
Northern Light Blue feminised seeds produce plants that stay short, bushy, and shaped like a Christmas tree — a sturdy central cola surrounded by fat, dark green fan leaves. If you're growing in a 60x60cm tent, this strain fits without heavy training. It practically grows itself indoors, which is exactly why we'd recommend it to anyone working with limited vertical space or running their first serious indoor cycle.
That said, it responds well to LST (low-stress training) if you want to open up the canopy and push light deeper into the lower bud sites. With 20% THC and the kind of resin coverage that makes trimming a sticky affair, the payoff is there whether you train or leave it to do its thing.
The flowering time is where this strain really earns its spot. At 50–55 days, you're looking at a fast turnaround compared to most photoperiod strains. For growers running multiple cycles per year, that extra week or two saved per run adds up. And the yield — 500g/m² — is genuinely impressive for a plant this compact. You're not sacrificing weight for speed here.
Crack open a cured jar of Northern Light Blue and you'll get hit with a wave of sweet berries — that's the Blueberry parent doing its work. Underneath there's an earthy, almost piney undertone from the Northern Light side. The terpene profile is rich enough that you can smell it through the bag, which is worth knowing if discretion matters to you. A carbon filter isn't optional with this one.
The buds themselves are dense, coated in a visible layer of sticky trichomes, and carry that deep green colour with occasional purple hints when night temperatures drop during late flowering. Visually and aromatically, this is a strain that looks as good as it smells.
Northern Light Blue feminised seeds are built for indoor cultivation. The compact structure means you won't fight for headroom, and the Indica-dominant genetics keep internodal spacing tight. Here's how to get the most from your three seeds.
Some growers run this strain in SOG (sea of green) setups and report averaging 16–17g of dried product per plant, which scales nicely when you pack a tent full of these compact bushes.
| Spec | Value |
|---|---|
| Seed Bank | Delicious Seeds |
| Genetics | Northern Light x Blueberry |
| Type | 100% Indica |
| Seed Type | Feminised (photoperiod) |
| THC | 20% |
| Flowering Time | 50–55 days |
| Indoor Yield | Up to 500g/m² |
| Plant Structure | Short, bushy, Christmas tree shape |
| Aroma | Sweet berry, earthy pine |
| Seeds per Pack | 3 |
Running Northern Light Blue in a small tent? Pair it with a carbon filter and extraction fan kit to keep that berry aroma contained. If you're doing SOG, grab extra pots and a propagation tray to maximise your canopy coverage from day one.
Here's the honest bit. Northern Light Blue's dense bud structure is a double-edged sword. Those fat, tightly packed colas look incredible, but they're also a magnet for bud rot if your humidity creeps up during late flowering. We've seen growers lose buds in the final week because they didn't keep airflow moving through the canopy. A small oscillating fan pointed at the lower canopy and a dehumidifier running in the last two weeks of flower will save you heartache.
The smell is another thing to plan for. This isn't a subtle strain. The Blueberry terpenes are loud — genuinely room-filling once you hit mid-flower. If you're growing anywhere near neighbours or shared ventilation, a quality carbon filter is non-negotiable. We'd pick an oversized filter over an undersized one every time with this strain.
One more thing: while 500g/m² is the stated yield, hitting that number depends on your light intensity and how well you fill the canopy. Under a decent 400W+ LED in a well-dialled environment, it's absolutely achievable. Under a weaker light or in a cramped setup without training, expect closer to 350–400g/m². Still solid, but set your expectations based on your actual setup.
If you're weighing Northern Light Blue feminised seeds against other compact Indicas, here's how it stacks up. Pure Northern Light strains flower in a similar 50–55 day window but typically lack the berry terpene profile — you get earthy, piney, functional buds without the flavour complexity. Blueberry on its own can stretch more than you'd expect from an Indica and often takes 55–65 days to finish, so you're trading speed for flavour.
Northern Light Blue sits right in the middle: fast like Northern Light, flavourful like Blueberry, and more compact than either parent tends to be on its own. For a 60x60 or 80x80 tent where you want one strain that does everything without fuss, this is the one we'd point you towards.
| Trait | Northern Light Blue | Northern Light (pure) | Blueberry (pure) |
|---|---|---|---|
| Genetics | NL x Blueberry | Afghani-dominant Indica | Afghani x Thai x Purple Thai |
| Flowering Time | 50–55 days | 50–55 days | 55–65 days |
| THC | 20% | 16–18% | 17–20% |
| Yield | 500g/m² | 450–500g/m² | 400–450g/m² |
| Aroma | Berry + earthy pine | Earthy pine | Sweet berry |
| Height | Short, compact | Short, compact | Medium, some stretch |
Northern Light Blue tests at 20% THC. That puts it in the upper-mid range for Indica strains — strong enough to deliver a proper body-heavy effect without being overwhelming for moderately experienced users.
Yes, it's one of the better choices for tight spaces. The plant stays short and bushy with a Christmas tree shape that fits comfortably in a 60x60cm tent. You can also run it in SOG setups for efficient use of a small footprint.
It does. The Blueberry genetics give it a loud berry aroma that fills a room from mid-flower onwards. A carbon filter is essential if you need any kind of odour control.
Not necessarily. The natural Christmas tree structure works well without intervention. LST can help open the canopy for better light penetration, but it's optional — the plant performs well left alone.
Under a strong LED (400W+) in a well-managed environment, 500g/m² is achievable. With less light or a smaller setup, expect 350–400g/m². SOG growers report around 16–17g dried per plant.
50–55 days from the flip to 12/12. That's fast for a photoperiod strain and makes it practical for growers running multiple cycles per year.
Yes, all seeds in the pack are feminised. Every viable seed produces a female plant, so there's no need to identify and remove males during early flowering.
Last updated: April 2026
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.
