AK
Cannabis seeds
by Spliff Seeds
AK Feminized Seeds by Spliff Seeds
AK feminized seeds are a compact, indica-dominant hybrid bred by Spliff Seeds from their AK mother crossed with Northern Lights Special (90% Indica). They deliver 500g/m² indoors from plants that barely crack 90cm tall — finishing flower in just 8 weeks. Five feminized seeds per pack, built for growers who want heavy harvests without heavy maintenance.
Why AK Feminized Seeds Deserve Your Grow Space
We've watched first-time growers lose entire harvests to mould, nutrient burn, or genetics that throw a tantrum the moment conditions aren't textbook. AK feminized seeds by Spliff Seeds sidestep most of those disasters. The Northern Lights Special parentage (90% Indica) gives these plants a stocky, uniform structure — you won't get one lanky outlier stealing all the light while three runts sulk underneath. They handle soil, coco, and hydro equally well, and they're remarkably forgiving if your temperatures drift or your feeding schedule isn't spot-on.
The real party trick is the yield-to-height ratio. At 50–90cm indoors, these plants stay short enough for a small tent or a cupboard grow, yet they push out 500g/m² of dense, resinous bud in 8 weeks of flowering. That's a number you'd normally associate with strains twice this height. If you're running a Sea of Green setup, the compact, uniform growth pattern is a genuine advantage — you can pack more plants per square metre without canopy management turning into a full-time job.
The mould resistance is worth mentioning twice. Dense buds and high humidity are usually a recipe for botrytis, but the AK shrugs it off. We'd still recommend good airflow — don't be daft about it — but you've got a much wider margin for error than with most heavy-yielding genetics.
AK Feminized Seeds: Specifications and Growing Data
| Spec | Value |
|---|---|
| Seed Bank | Spliff Seeds |
| Seed Type | Feminized (photoperiod) |
| Genetics | AK mother x Northern Lights Special (90% Indica) |
| Flowering Time | 8 weeks |
| Indoor Height | 50–90cm |
| Indoor Yield | 500g/m² |
| Mould Resistance | High |
| Suitable Media | Soil, coco, hydro |
| Seeds Per Pack | 5 |
| SKU | CSSF0003 |
Which Growing Medium Works Best for AK Seeds
AK feminized seeds perform well in soil, coco, and hydro — and that's not marketing fluff, it's one of the genuine strengths of this cross.
| Medium | Best For | Watch Out For |
|---|---|---|
| Soil | First-time growers; most forgiving pH and nutrient buffer | Slower vegetative growth compared to coco or hydro |
| Coco | Growers wanting faster growth with more control than soil | Needs more frequent watering; cal-mag supplementation often required |
| Hydro (DWC/NFT) | Experienced growers chasing maximum yield | Less room for error on pH and EC; equipment cost is higher |
If you're new to growing, start with soil. The AK is forgiving enough that you can learn the basics — watering rhythm, light distance, when to flip to 12/12 — without the added complexity of managing nutrient solutions and pH meters from day one. Once you've got a harvest under your belt, coco is the natural next step.
How to Grow AK Feminized Seeds Indoors
- Germination: Soak your AK feminized seeds in a glass of water for 12–24 hours until they sink, then transfer to damp paper towels in a warm, dark spot (around 22–25°C). Taproots should appear within 48–72 hours.
- Seedling stage: Plant the sprouted seed 1cm deep in your chosen medium. Keep humidity around 65–70% and light on an 18/6 cycle. A small CFL or low-power LED is plenty at this stage — don't blast seedlings with a 600W HPS.
- Vegetative growth: The AK stays compact, so 3–4 weeks of veg is usually enough before flipping. Top or LST (low-stress training) if you want a flatter canopy for even light distribution. These plants respond well to topping without stalling.
- Flip to flower: Switch your light cycle to 12/12. The AK finishes flowering in 8 weeks. You'll see pistils within the first 10 days and dense bud formation by week 3–4.
- Feeding: These plants aren't heavy feeders. Start at 50–75% of your nutrient manufacturer's recommended dose and increase only if the plant asks for it. The Northern Lights Special genetics make this strain tolerant of slight over- or under-feeding.
- Harvest: Check trichomes with a jeweller's loupe around week 7. When roughly 70–80% of trichomes are milky with a few turning amber, you're in the harvest window. Expect dense, resinous buds that dry down to a rock-hard finish.
AK Feminized Seeds vs Other Beginner Strains
Choosing your first strain can feel overwhelming. Here's how AK feminized seeds stack up against two other popular beginner-friendly options we carry:
| Strain | Flowering Time | Indoor Yield | Height | Best Feature |
|---|---|---|---|---|
| AK (Spliff Seeds) | 8 weeks | 500g/m² | 50–90cm | Mould resistance + compact size |
| Northern Lights (various) | 7–8 weeks | 400–500g/m² | 80–120cm | Classic indica; very stable genetics |
| Critical (various) | 7–8 weeks | 500–600g/m² | 80–140cm | Higher yield ceiling; needs better humidity control |
If your grow space is tight — anything under a metre of vertical clearance after you account for pots, lights, and hanging distance — the AK is the obvious pick. Critical strains can push higher yields, but they grow taller and are more susceptible to bud rot in the final weeks. Northern Lights is a solid alternative, but you're looking at slightly less yield from a slightly taller plant. For a first grow in a small tent, we'd pick the AK.
Running AK feminized seeds in a small tent? Pair them with a complete grow kit that includes lighting, ventilation, and a carbon filter — everything you need to go from seed to harvest without piecing together separate components. A 60x60 or 80x80 tent is the sweet spot for 2–4 AK plants.
What to Expect from AK Buds at Harvest
The buds come off the plant dense and coated in a thick layer of trichomes — proper sticky when you handle them fresh. After a 10–14 day dry and a couple of weeks curing in jars, they harden up to an almost rock-like density. The aroma is earthy and piney with a sharp, slightly sour undertone that's characteristic of AK genetics. It's not a fruity strain, and it's not trying to be. The smoke is smooth for something this dense, with a flavour that leans towards woody, spicy notes.
According to research published in Cannabis as a Source of Approved Drugs: A New Look, cannabinoids have been studied for a range of potential applications, including chronic neuropathic pain management (PMC10707504). The resinous nature of AK buds reflects a robust cannabinoid and terpene profile, though specific lab results will vary by phenotype and growing conditions.
Frequently Asked Questions
Are AK feminized seeds good for first-time growers?
Yes — they're one of the best beginner strains we sell. The mould resistance, compact size (50–90cm), and tolerance for nutrient and temperature fluctuations mean you can make mistakes and still pull a decent harvest. Stick with soil for your first run.
How much yield can I expect from AK feminized seeds indoors?
Spliff Seeds rates them at 500g/m² indoors under optimal conditions. First-time growers typically hit 60–70% of the stated yield, so expect around 300–350g/m² on your first attempt. Experienced growers using training techniques and dialled-in feeding can hit or exceed 500g/m².
Do AK feminized seeds work in a Sea of Green (SOG) setup?
They're excellent for SOG. The uniform, compact growth means you can fit more plants per square metre without canopy management headaches. Run 9–16 plants per m² with a short veg period (1–2 weeks) and flip early.
What's the difference between AK feminized seeds and AK-47?
AK-47 is a specific strain by Serious Seeds with sativa-dominant genetics. The Spliff Seeds AK uses an AK mother crossed with Northern Lights Special, making it 90% indica-dominant — shorter, faster flowering, and more mould resistant. Different genetics, different growing characteristics.
Can I grow AK feminized seeds outdoors?
You can, though they're optimised for indoor growing. Outdoors, the compact size means lower total yield per plant, but the mould resistance is a genuine advantage in damp climates. Expect harvest around late September to early October in northern European conditions.
How many AK feminized seeds come in a pack?
Five feminized seeds per pack. All seeds are feminized, so you won't need to identify and remove males — every plant that germinates should produce flowers.
Do I need a carbon filter when growing AK indoors?
Yes. The earthy, piney aroma gets strong from about week 3 of flower onwards. Without a carbon filter and proper extraction, your neighbours will know what you're up to. Every complete grow kit we sell includes one.
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.