Medical Mass Feminized Seeds by Royal Queen Seeds – High CBD 1:1 THC:CBD Balance for Therapeutic Use

Medical Mass feminized seeds from Royal Queen Seeds produce balanced, CBD-rich plants with a near 1:1 THC:CBD ratio, delivering therapeutic benefits without overwhelming psychoactivity.

Are you tired of strains that either do too much or too little?

Too many CBD varieties leave you feeling flat, unfocused, or underwhelmed—like you’re medicating without living. Others hit too hard, locking you to the couch when all you wanted was relief with presence.

Weak genetics mean inconsistent results, poor resin production, and harvests that don’t match the promise. You invest time, space, and energy only to end up with buds that lack potency, flavor, or yield.

Choosing the wrong strain doesn’t just waste a grow cycle—it undermines your trust in the plant itself. And when you're relying on cannabis for daily balance, that’s not just frustrating. It’s personal.

What if your next grow gave you both relief and clarity—without compromise?

Medical Mass isn’t another half-baked CBD experiment. It’s an award-winning, lab-tested strain bred from elite genetics like Critical Mass and Royal Medic, delivering consistent, high-resin flowers with a balanced cannabinoid profile.

With up to 550 g/m² indoors and a manageable height of 0.60–1.00 m (1.97–3.28 ft), it’s built for discretion and efficiency. Whether you're growing in a closet or a greenhouse, this strain performs—flavorful, stable, and ready in just 9–10 weeks of flowering.

Technical specifications

• Breeder / Brand: Royal Queen Seeds
• Type: Feminized
• Dominance: Indica 60% / Sativa 40%
• Genetics / Cross: Critical Mass × CBD-dominant plant
• Flowering time: 65–70 days
• Outdoor harvest: Late September (Northern Hemisphere)
• Indoor yield: 500–550 g/m² (17.64–19.40 oz/ft²)
• Outdoor yield: 500–550 g/plant (17.64–19.40 oz/plant)
• Indoor height: 60–100 cm (23.62–39.37 in)
• Outdoor height: up to 1.50 m (4.92 ft)
• Difficulty: Low
• Structure and vigour: Compact, bushy, strong branching
• Ideal climate: Temperate, Mediterranean
• Resistance: High resistance to mold and pests
• Training: Suitable for LST, SCROG, and light topping
• Recommended pot: 11–18 L (soil or coco)
• THC: 10%
• CBD: High (approx. 10%)
• Aromatic profile: Myrcene, limonene, caryophyllene
• Flavour: Sweet, honey, fruity, with peppery notes
• Effect: Calming, physically relaxing, clear-headed

Why Medical Mass outperforms basic CBD strains

• Stable 1:1 THC:CBD ratio ensures consistent, synergistic effects
• Higher resin production means more efficient extractions and stronger effects
• Compact size fits stealth grows and small tents without sacrificing yield
• Faster flowering than most medical strains—ready in under 10 weeks
• Robust structure resists mold and pests, even in humid conditions

Real benefits you’ll actually feel

You’ll notice the difference from the first hit: a smooth, sweet vapor with a calming body buzz that eases tension without fogging your mind. It’s the kind of strain you can use during the day—whether you’re managing discomfort, unwinding after work, or just seeking balance.

The dense, resinous buds are perfect for tinctures, edibles, or RSO. And because the plant finishes fast and yields heavily, you’ll have enough for months of use from a single grow.

Growers love it for its ease: no finicky feeding, no stretchy panic, no hermies. Just a reliable, high-performing plant that delivers every time.

Step-by-step growing guide

1. Germinate seeds in a moist paper towel or starter cube at 22–25 °C and 70% RH.
2. Transplant to a 1.5–3 L pot once roots emerge; use well-aerated soil or coco.
3. Move to final pot (11–18 L) at the end of week 2–3 of vegetative growth.
4. Switch to 12/12 light cycle to trigger flowering; maintain 20–25 °C and 40–50% RH.
5. Apply bloom boosters like K-Boost ripening stimulator with potassium | Aptus in mid-flowering for denser buds.
6. Flush with plain water 7–10 days before harvest to improve taste.
7. Harvest when trichomes turn milky to amber for maximum therapeutic effect.

Frequently Asked Questions

Is Medical Mass suitable for beginners?

Yes, it’s one of the easiest high-CBD strains to grow. It’s forgiving of minor mistakes and resistant to common issues like mold and pests.

Can I grow Medical Mass outdoors?

Absolutely. It thrives in temperate and Mediterranean climates, ready for harvest by late September.

Does it have a strong smell during flowering?

It has a moderate aroma—sweet and skunky—but not overpowering. Use a carbon filter if growing discreetly.

What’s the best way to use the harvest?

Ideal for vaporizing, tinctures, or making CBD-rich edibles. Its balanced profile makes it perfect for daily therapeutic use.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown dozens of CBD strains, but Medical Mass stands out. I ran three plants in a 1.2 x 1.2 m tent under 600W LED, using Canna Coco A & B with Carbo Max in late bloom. They stayed short, bushy, and loaded with resin.

The flavor is rich—honey and fruit with a spicy kick—and the effect is exactly what medical users need: deep relaxation without mental haze. I’ve recommended it to friends managing chronic tension, and the feedback has been unanimous: 'This one actually works.'

If you want a strain that delivers on both yield and therapeutic value, Medical Mass is your go-to.