Medusa F1 Auto by Royal Queen Seeds – Fast-Flowering F1 Hybrid with Minty-Peppery Aroma & Balanced High

Medusa F1 Auto by Royal Queen Seeds is a true F1 hybrid that delivers uniform growth, mouthwatering minty-peppery aromas, and a perfectly balanced high — all in a compact 72-day cycle that’s perfect for beginners and pros alike.

Overwhelmed by inconsistent grows and weak yields?

Starting a new grow can feel like rolling the dice — will your plants be stable? Will they actually deliver on the promised flavor and potency?

Without reliable genetics, you risk wasted time, poor harvests, and frustration

Many growers end up with plants that stretch too much, mold easily, or just don’t taste right. You follow the steps, but the results feel amateur. The truth? It’s not you — it’s the seeds. Inconsistent genetics sabotage even the best care.

Medusa F1 Auto gives you clone-like uniformity from seed — no guesswork needed

Thanks to its pure inbred lineage (Sugar Magnolia × American Beauty), every Medusa F1 Auto seed grows with the same vigor, structure, and flavor. You get dense, frosty buds in just 72 days, with a terpene profile that hits mint, pepper, and fresh fruit. High THC and CBG levels deliver a balanced effect: relaxed body, alert mind. No more trial and error — just predictable, premium results.

Why growers love Medusa F1 Auto

• F1 hybrid stability: Uniform plants, every time — no weak links
• Fast 72-day harvest: From seed to stash in under 11 weeks
• Minty-peppery terpene punch: Fresh, bold aroma with fuel and berry undertones
• Balanced high: Relaxing body stone with creative, uplifting mental clarity
• High THC & CBG: Potent cannabinoid profile for a full-spectrum experience
• Easy trimming: Big, swollen calyxes make post-harvest a breeze
• Stress-resistant: Handles minor mistakes and environmental swings like a pro

Technical specifications

• Breeder / Brand: Royal Queen Seeds
• Type: Autoflowering
• Dominance: Hybrid (Indica/Sativa balanced)
• Genetics / Cross: Sugar Magnolia × American Beauty
• Autos: 70–75 days from germination to harvest
• Yield: Up to 500 g/m² indoors (17.64 oz/ft²); up to 120 g/plant outdoors (4.23 oz/plant)
• Height: 0.80–0.85 m (2.62–2.79 ft)
• Difficulty: Low — ideal for beginners
• Structure and vigour: Elongated, strong branches, well-spaced internodes
• Resistance: High resistance to stress; moderate sensitivity to Botrytis (manage humidity)
• Training: Suitable for LST; avoid topping or FIM (not recommended for autos)
• Recommended pot: 18–27 L final pot (early transplant)
• THC: Very high (approx. 20–25%)
• CBD: Low (approx. 0.5–1%)
• CBG: High (approx. 1–2%)
• Aromatic profile: Myrcene, ocimene, farnesene, caryophyllene
• Flavour: Mint, pepper, blueberry, diesel, fresh fruit
• Effect: Balanced — physically relaxing, creatively uplifting, great for daytime or evening

How to grow Medusa F1 Auto for best results

Get the most out of your Medusa F1 Auto with this simple, expert-backed guide — designed for fast, stress-free success.

Quick overview

Autoflowering F1 hybrid from Royal Queen Seeds — 70–75 days total, low difficulty, ideal for indoor tents or discreet outdoor grows.

• Best for: Beginners, small spaces, fast harvests
• Grow style: Soil or coco, DWC compatible
• Light: 18–20 h/day all cycle
• Climate: 22–26 °C veg, 20–25 °C flower
• RH: 60–70% seedling, 50–60% veg, 40–50% flower

Safe start

Launch your grow with strong, healthy seedlings — no weak starts.

• Germinate in moist paper towel at 22–25 °C
• Transplant when radicle is ~1 cm long
• Use airy soil mix with perlite for drainage
• Try Clonex Mist to boost early root development

Directed growth

Keep plants compact and vigorous during stretch.

• Use 18–20 h light cycle from day one
• Apply gentle LST to shape canopy
• Water when top 2–3 cm of soil is dry
• Feed lightly — autos don’t need heavy nutrients
• Consider Rootmax Bio-stimulator of Roots Green Hope for stronger root mass

Efficient flowering

Maximize resin and yield in the final stretch.

• Monitor trichomes: harvest when milky with slight amber
• Lower RH to 40–50% to prevent mold
• Ensure strong airflow around buds
• Flush 7–10 days before harvest
• Use Fulvic-Blast in late bloom to improve nutrient uptake and taste

Frequently Asked Questions

Is Medusa F1 Auto good for beginners?

Yes! Its F1 hybrid stability, fast cycle, and resistance to stress make it one of the easiest high-potency autos to grow.

Can I grow Medusa F1 Auto in DWC?

Absolutely. Royal Queen Seeds confirms it works perfectly in DWC systems — just control pH and EC carefully.

Does Medusa F1 Auto smell strong during flowering?

Yes, it has a high smell profile — mint, pepper, and fuel. Use a carbon filter if growing indoors for discretion.

Why is it called an F1 hybrid?

F1 means it’s bred from two pure, inbred parent lines. This ensures genetic uniformity — every plant grows the same, like a clone from seed.

How much yield can I expect outdoors?

Up to 120 g/plant (4.23 oz) in optimal conditions — full sun, warm climate, and proper feeding.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown dozens of autos, but Medusa F1 stands out. I ran three in a 60x60x140 cm tent with a 250W LED — all hit 80–85 cm and finished in exactly 72 days. The smell during flowering was insane: minty, spicy, with a gassy kick. I used a simple soil mix with perlite and went light on nutrients — no need to overfeed. One plant developed slight humidity stress, but held strong. The high? Perfect balance — I could work, create, and then unwind. Trimming was fast thanks to those big calyxes. If you want a no-stress, high-reward auto, this is it. I’ve already re-ordered.