Power Flower
Cannabis seeds
by Royal Queen Seeds
Power Flower Feminized Cannabis Seeds by Royal Queen Seeds
Power Flower is a sativa-dominant feminized cannabis seed from Royal Queen Seeds — a direct descendant of the legendary Power Plant that turned the Dutch coffee shop scene upside down in the 1990s. With South African genetics, a flowering time of just 8 weeks, and yields up to 600 g/m², this strain packs commercial-grade productivity into a plant that still delivers the flavour and potency the original was famous for. Available in packs of 1, 3, 5, or 10 seeds.
Which Pack Size?
Running a single plant to test the genetics? Grab the 1-seed pack. Planning a full canopy under a 600W light in a 1.2 x 1.2 m tent? The 5-pack gives you room for pheno selection with a spare. The 10-pack is your best value per seed and the go-to for growers filling a dedicated flower room or running a SOG setup. The 3-pack splits the difference — enough to fill a small tent without overcommitting.
Power Flower Seeds: South African Sativa Genetics, Dutch Engineering
The original Power Plant hit Amsterdam's coffee shops in the mid-1990s and became one of those strains that everyone had an opinion about — mostly because the first hit from a bong would genuinely catch people off guard. The genetics trace back to South African sativa landraces: tall, vigorous plants that thrive in open space and reward patience with dense, resinous colas. Royal Queen Seeds took those genetics, stabilised them, and released Power Flower as a feminized variety — so no more culling males halfway through veg.
What makes this one stand out from other sativa-heavy seeds in the catalogue is the flowering time. Eight weeks for a plant that's 87.5% sativa is genuinely quick. Most sativa-dominant strains ask for 10–12 weeks in flower, which tests your patience and your electricity bill. Power Flower delivers a proper sativa effect — clear-headed, uplifting, energetic — without the marathon wait. That combination of speed and yield is why commercial growers in the Netherlands adopted it so quickly back in the day.
Power Flower Specifications and Growing Data
| Specification | Detail |
|---|---|
| Seed Bank | Royal Queen Seeds |
| Genetics | South African Sativa landrace (Power Plant lineage) |
| Type | Feminized photoperiod |
| Sativa / Indica Ratio | 87.5% Sativa / 12.5% Indica |
| Flowering Time | 8 weeks |
| Indoor Height | Up to 1.5 m |
| Outdoor Height | Up to 2 m |
| Indoor Yield | Up to 600 g/m² |
| Outdoor Yield | Up to 100 g per plant |
| Available Pack Sizes | 1, 3, 5, or 10 seeds |
Complete your grow setup: Power Flower's tall stature and heavy colas benefit from proper support and airflow. Pair these seeds with a grow tent, an oscillating clip fan to strengthen stems during veg, and a quality LED panel that covers at least 1.2 x 1.2 m of canopy. If you're running soil, a perlite mix keeps the roots oxygenated — this strain drinks a lot during stretch.
Why Power Flower Feminized Seeds Deserve a Spot in Your Grow Room
We've been stocking Royal Queen Seeds since they were still a relatively small operation, and Power Flower has consistently been one of those strains that growers come back for. The reason is simple maths: 8 weeks of flowering, up to 600 g/m² indoors, and a genetic profile that's almost entirely sativa. That's three things that don't usually coexist in the same plant.
Most sativa growers accept a trade-off — you get the cerebral, energetic effect you're after, but you pay for it with extra weeks under the lights and a plant that wants to touch the ceiling. Power Flower's Indica quarter (that 12.5%) keeps the stretch manageable. Indoors, you're looking at around 1.5 m, which is workable in a standard 2 m tent with some low-stress training. Outdoors, she'll push to 2 m without any intervention, and that's where the South African genetics really show — broad fan leaves, thick main stems, and lateral branching that fills out nicely in full sun.
The honest limitation: outdoor yield per plant (up to 100 g) is modest compared to some of the hybrid monsters in the Royal Queen Seeds catalogue. If you're growing outdoors and chasing maximum weight, something like Royal Moby or Amnesia Haze will outproduce Power Flower per plant. But indoors under a proper light, 600 g/m² is competitive with anything in the sativa category — and you're harvesting a full 2–4 weeks earlier than most of the competition. That time saving compounds across multiple cycles per year.
How to Grow Power Flower Feminized Seeds
- Germination: Soak seeds in a glass of room-temperature water (20–22°C) for 12–24 hours until they sink. Transfer to damp paper towels between two plates, keep warm and dark. Taproots typically emerge within 24–72 hours.
- Seedling stage: Plant taproot-down into a small pot (0.5–1 L) with light, airy soil. Keep humidity around 65–70% and temperature at 22–25°C. A propagation dome works well. Light cycle: 18/6.
- Vegetative phase: Transplant into final containers (11–15 L for indoor, 20+ L for outdoor) once the roots fill the starter pot. Power Flower stretches, so start low-stress training (LST) early — bend the main stem horizontally to expose lower branches. Top once above the 5th node if you want a bushier canopy. Continue 18/6 light cycle. Feed a balanced nitrogen-rich nutrient schedule.
- Flip to flower: Switch to 12/12 when plants reach roughly half your target final height — Power Flower can double in size during the first 2–3 weeks of flower (the "stretch"). Expect significant vertical growth from the sativa genetics.
- Flowering (8 weeks): Transition to a phosphorus and potassium-heavy feed. Support heavy colas with bamboo stakes or a trellis net. Keep humidity below 50% from week 5 onward to prevent bud rot — those dense South African-style colas can trap moisture. Monitor trichomes with a jeweller's loupe: harvest when trichomes shift from clear to mostly cloudy with a few amber heads for the classic sativa-leaning effect.
- Harvest and dry: Cut whole branches, hang in a dark room at 18–20°C and 55–60% humidity for 10–14 days. Slow drying preserves terpene profiles — rush this step and you lose the distinctive flavour that made Power Plant famous in the first place. Cure in glass jars for a minimum of 2 weeks, burping daily for the first 7 days.
Power Flower vs Other Sativa Seeds from Royal Queen Seeds
| Strain | Sativa % | Flowering Time | Indoor Yield | Key Difference |
|---|---|---|---|---|
| Power Flower | 87.5% | 8 weeks | Up to 600 g/m² | Fastest flowering sativa in the lineup; South African genetics |
| Amnesia Haze | 70% | 10–11 weeks | Up to 600 g/m² | More complex terpene profile; longer wait |
| Royal Moby | 65% | 9–10 weeks | Up to 600 g/m² | Higher Indica content; more physical effect |
All three hit similar yield ceilings indoors, but Power Flower gets there 2–3 weeks faster. If time per cycle matters to you — and it should, because every extra week is electricity, nutrients, and risk of pest or mould issues — Power Flower is the most efficient sativa option Royal Queen Seeds offers.
Frequently Asked Questions
How long does Power Flower take to flower?
Power Flower feminized has a flowering period of approximately 8 weeks. That's exceptionally short for a strain with 87.5% sativa genetics — most sativa-dominant varieties need 10–12 weeks.
What yield can I expect from Power Flower indoors?
Under optimal conditions with adequate lighting (400–600W HPS or equivalent LED), Power Flower can produce up to 600 g/m² indoors. Outdoor plants typically yield around 100 g per plant.
How tall does Power Flower grow?
Indoors, expect heights up to 1.5 m. Outdoors without training, she'll reach approximately 2 m. Use low-stress training or topping to manage height in smaller grow spaces.
Is Power Flower suitable for beginner growers?
Yes — the combination of feminized seeds (no sexing required), a short flowering time, and vigorous growth makes Power Flower forgiving for newer growers. Just watch your nutrient levels; sativas burn easily if overfed.
What's the difference between Power Flower and the original Power Plant?
Power Flower is a feminized descendant of Power Plant, stabilised by Royal Queen Seeds. The genetics and flavour profile are closely related, but the feminized format eliminates the need to identify and remove male plants — saving time and grow space.
Can I grow Power Flower outdoors in northern Europe?
Power Flower's 8-week flowering period means she can finish before autumn sets in, even in northern climates. Aim for a harvest window in late September to early October. She prefers warm, sunny conditions but her South African vigour handles cooler nights better than many sativas.
What growing method works best for Power Flower?
SOG (Sea of Green) and SCRoG (Screen of Green) both work well. SOG takes advantage of the high per-square-metre yield; SCRoG helps manage the sativa stretch and exposes more bud sites to light. Soil and hydro are both viable — hydro tends to push faster growth but requires more precise nutrient management.
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.