Power Plant
Cannabis seeds
by Spliff Seeds
Power Plant Feminised Seeds by Spliff Seeds
Power Plant is a 90% Sativa feminised cannabis seed from Spliff Seeds that delivers 400–500g/m² indoors on an 8-week flowering cycle. Developed in the late nineties — around the same time we opened our doors in Amsterdam — this strain built its reputation on sheer, relentless output. The buds come out caked in resin with a bittersweet lime scent that fills the room before you even open the jar. If you want a Sativa that doesn't make you wait until November, this is the one to grow.
Why Power Plant Feminised Seeds Still Dominate
There's a reason this strain has survived over two decades of new genetics flooding the market. Power Plant doesn't try to be exotic — it just produces. We've watched trends come and go since 1999, and the strains that stick around are the ones that deliver consistently without drama. Power Plant is exactly that kind of seed.
The genetics are 90% Sativa, 10% Indica, but the plant doesn't behave like a typical Sativa. Indoors, it stays compact at 70–100cm — shorter than most growers expect from a Sativa-dominant hybrid. That means you can run it in a standard grow tent without worrying about height management or aggressive topping. Outdoors, it stretches to about 1–1.2m, which is still manageable even in a small garden or balcony setup with some screening.
The real selling point is the combination of speed and yield. Eight weeks of flowering for 400–500g/m² is genuinely impressive for a 90% Sativa. Most Sativa-dominant strains ask for 10–12 weeks and give you less. Power Plant finishes faster than some Indica-dominant hybrids we carry, and it does so with dense, resin-heavy buds rather than airy popcorn.
Power Plant Aroma and Effect
The scent profile is bittersweet lime — fresh, citrusy, and sharp. It's the kind of aroma that announces itself the moment trichomes start forming, so if you're growing indoors, a carbon filter is non-negotiable unless you want your neighbours asking questions. The lime note is dominant, with a slightly bitter, herbal undertone that rounds it out. Not fruity-sweet like a Haze cross — more like biting into a lime peel.
Spliff Seeds describes the effect as rushing and energetic. This is a daytime strain through and through. The 90% Sativa genetics push towards a cerebral, active headspace rather than anything heavy or sedative. According to research published in Cannabis, a Complex Plant (Russo, 2013), there is considerable variation in the effects of cannabis on individuals — so your mileage will vary depending on tolerance, set, and setting. But the breeding intent here is clear: energy, not couch.
Growing Power Plant Feminised Seeds Indoors
Power Plant feminised seeds are about as straightforward as Sativa-dominant genetics get. The compact indoor height of 70–100cm means you won't need to supercrop or run a SCROG net unless you want to maximise canopy coverage — which, honestly, is still worth doing if you're chasing the upper end of that 400–500g/m² range.
The 8-week flowering time is measured from the flip to 12/12. Spliff Seeds' own grow data puts THC content around 16.5%, which is moderate by current standards but pairs well with the energetic effect profile. According to a Dutch Passion grow report on this lineage, running a 1000W HPS on an 18/6 vegetative schedule before flipping produces the best results — though a quality 400W LED in a well-reflective tent will get you there with lower electricity costs.
One honest limitation: Power Plant is not a stealth grow. The lime aroma is strong and starts early. If odour control matters to you — and it usually does — invest in a proper carbon filter and inline fan. A passive intake with no extraction will not cut it.
Growing Power Plant Feminised Seeds Outdoors
Outdoors, Power Plant reaches 1–1.2m and can yield up to 550g per plant in a sheltered, sunny spot. Harvest window is end of September through mid-October, which makes it viable across most of Western Europe as long as autumn doesn't arrive early with heavy rain.
The key word from Spliff Seeds is "sheltered." Power Plant's resin-heavy buds are dense enough to hold moisture, and dense buds plus late-season rain equals bud rot. A south-facing wall, a greenhouse, or even a simple rain cover during the last two weeks of flowering can make the difference between a full harvest and heartbreak. We'd pick a spot with good airflow over a spot with maximum sun hours if you can't have both.
The best climate for Power Plant outdoors is Mediterranean or temperate maritime — think the Netherlands, southern England, northern France, or anywhere with warm summers and dry autumns. If you're in Scandinavia or at altitude, an indoor setup is the safer bet.
| Spec | Value |
|---|---|
| Seed Bank | Spliff Seeds |
| Genetics | 90% Sativa / 10% Indica |
| Seed Type | Feminised (photoperiod) |
| Flowering Time | 8 weeks |
| Indoor Height | 70–100 cm |
| Outdoor Height | 1–1.2 m |
| Indoor Yield | 400–500 g/m² |
| Outdoor Yield | 550 g per plant |
| Outdoor Harvest | End of September – mid-October |
| Aroma | Bittersweet, fresh lime |
| Effect | Rushing, energetic |
| Pack Size | 5 feminised seeds |
| SKU | CSSF0018 |
Running Power Plant indoors? Pair these seeds with a complete grow tent kit — tent, lighting, ventilation, and carbon filter in one box. A 80x80 cm tent fits 2–4 Power Plant plants comfortably given their compact 70–100 cm stature. You'll also want a pH meter and a basic nutrient kit for the flowering phase to push yields towards that 500 g/m² ceiling.
Power Plant Feminised Seeds: What Makes Them Worth Growing
The feminised seed format means every seed in the 5-pack is female. No time wasted growing plants for three weeks, checking for pollen sacs, and culling half your tent. For a home grower with limited space, that's not a small thing — it's the difference between 5 productive plants and 2–3 productive plants plus wasted soil, water, and electricity.
Compared to other Sativa-dominant feminised seeds in the Spliff Seeds catalogue, Power Plant sits in a sweet spot between speed and output. If you want even faster results, an autoflower might shave a couple of weeks off total grow time — but you'll sacrifice yield and lose the ability to control vegetative growth with light schedules. Power Plant gives you photoperiod flexibility with near-autoflower speed once you flip to 12/12.
Against Dutch Passion's version of Power Plant (which is where this genetic line originally gained fame), the Spliff Seeds cut runs very similar numbers: 8-week flowering, comparable yields, same lime-forward terpene profile. The Spliff Seeds pack gives you 5 feminised seeds, and the genetics have been stabilised over years of selection. Both are solid — we'd say choose based on whichever seed bank you've had good germination results with before.
How to Grow Power Plant Feminised Seeds
- Germinate seeds using the paper towel method or directly in a small pot of moist, light seedling mix. Keep the temperature at 22–26°C. Taproots typically emerge within 24–72 hours.
- Transplant seedlings into their final containers once they have 2–3 sets of true leaves. Power Plant does well in 11–15 litre pots indoors. Outdoors, 20–30 litre pots or direct ground planting both work.
- Vegetate under 18/6 light for 3–5 weeks. Power Plant grows fast and stays compact, so 4 weeks of veg is usually enough to fill an 80x80 cm canopy with 4 plants. Some growers run 12/12 from seed with this strain — it's vigorous enough to produce decent results even without a dedicated veg phase.
- Flip to 12/12 to trigger flowering. The 8-week countdown starts here. Expect visible bud formation within the first 10–14 days.
- Feed with a bloom-phase nutrient schedule once flower sites appear. Power Plant is a heavy feeder during weeks 3–6 of flowering — the yield has to come from somewhere.
- Monitor trichomes from week 7 onwards. Harvest when trichomes shift from clear to mostly cloudy with a few amber heads. For the rushing, energetic effect Spliff Seeds describes, harvest on the earlier side — more amber means more sedative.
- Dry in a dark, ventilated space at 18–21°C and 55–60% humidity for 7–10 days. Cure in glass jars for a minimum of 2 weeks to let that lime aroma fully develop.
Power Plant Feminised Seeds: Indoor vs. Outdoor Comparison
| Factor | Indoor | Outdoor |
|---|---|---|
| Height | 70–100 cm | 1–1.2 m |
| Yield | 400–500 g/m² | Up to 550 g per plant |
| Harvest Time | 8 weeks from 12/12 flip | End of September – mid-October |
| Odour Control | Carbon filter required | Wind handles it (mostly) |
| Main Risk | Heat stress in small tents | Bud rot from late-season rain |
| Best For | Controlled, repeatable results | Maximum yield per plant |
Frequently Asked Questions
How difficult is it to grow Power Plant feminised seeds?
Straightforward. Power Plant stays compact, finishes in 8 weeks of flowering, and doesn't require advanced training techniques. The main thing to manage is odour — the lime aroma is strong and starts early. Good entry-level Sativa for growers stepping up from autoflowers.
How much do Power Plant feminised seeds yield?
Indoors, expect 400–500 g/m² under adequate lighting. Outdoors in a sheltered spot with good sun, a single plant can produce up to 550g. These figures come from Spliff Seeds' own breeding data and assume healthy plants with proper nutrition.
What is the best grow medium for Power Plant?
Soil works well for beginners — a light, well-draining mix with perlite gives roots room to breathe. Coco coir with hand-watering or a drip system can push yields higher if you're comfortable managing pH and EC. Hydro is overkill for a strain that already produces this much in soil.
Can I grow Power Plant in a small tent?
Yes. The 70–100 cm indoor height makes Power Plant one of the more tent-friendly Sativa-dominant strains available. A 60x60 cm tent fits 1–2 plants; an 80x80 cm fits 4 comfortably. Just make sure your carbon filter and fan setup fits above the canopy.
When should I harvest Power Plant outdoors?
End of September through mid-October, depending on your latitude and weather. Check trichomes — don't rely on the calendar alone. If heavy rain is forecast in early October, harvest a few days early rather than risk bud rot on those dense, resin-heavy colas.
Is Power Plant a good strain for 12/12 from seed?
It's one of the better candidates. Power Plant grows fast and vigorously enough that skipping a dedicated vegetative phase doesn't stunt it as badly as slower strains. You'll get smaller plants but still respectable yields, and total seed-to-harvest time drops significantly.
What does Power Plant smell like?
Bittersweet lime — sharp, fresh citrus with a herbal, slightly bitter backbone. The scent is noticeable from mid-flowering onwards and intensifies through harvest. After a proper 2-week cure, the lime note becomes cleaner and more defined.
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.