Magnum cannabis seeds packaging — Royal King Seeds Canada
Hybrid
THC 15%%
HybridFeminizedIn Stock

Magnum Feminized

S1 FeminizedSee Lab Report →

Mellow feminized hybrid with focused and calm effects and vigorous hybrid bud production. Ideal for beginner growers seeking a forgiving first grow.

Flavor:Sweet berry, cream, pine

Best for:🕐Anytime🛋️Relaxation🧘Stress Relief
Beginner Friendly
🧬
THC
15%
Flower
9 - 11 weeks
⚖️
Yield
High
🎯
Difficulty
Beginner
📏
Height
Tall
🌱
Grow
Indoor / Outdoor
💡

Grower tip: Feed on the higher end of hybrid ranges during peak flower

Select Pack Size
$17.49CAD

Premium stabilized genetics · germination guaranteed

Produces high yields with proper training and spacing
Brings pronounced focused effects tailored for anytime
Beginner-grade stability with reliable germination and vigor

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Community-verified premium genetics

Royal King Genetics — first-party test batch

Numbers below are from our internal seed-lot QC and verified grower submissions, not breeder marketing. Determined from a single batch tested 2026-03-15 on 225 seeds.

Germination rate: 97.4% (n=225)
Last QC test date: 2026-03-15
Indoor yield: 472-584 g/m² (avg across 8 verified grower reports)
Outdoor yield: 554-786 g/plant (avg across 7 verified grower reports)

About Magnum Feminized

Picking the right hybrid seed means knowing what you want from the harvest, and Magnum Feminized is built for growers who prioritize Focused effects alongside real flavor. The 49/51 indica-sativa genetics show up in every aspect — from the vigorous vertical growth to the butterscotch-forward smoke that defines the jar.

One detail that often gets overlooked: the secondary Humulene terpene in Magnum Feminized contributes hoppy, woody, herbal undertones that become more pronounced after a proper cure. In our experience, jars opened at three weeks taste noticeably different from those opened at six. At 13-17% THC, this strain has the potency to back up its terpene complexity, making it a solid choice for anyone building out a Canadian home garden with autoflower genetics.

Effects & Experience

Magnum Feminized opens with Focused as the lead note and builds from there. The onset is steady rather than abrupt — you will feel the shift starting within 3-5 minutes of consumption, with the full expression arriving around the 20-35 minutes mark. At that peak, the 49/51 indica-sativa balance becomes obvious: the mind sharpens into focus while the body stays light and mobile.

Dosage makes a real difference with this cultivar. A conservative dose (0.1-0.15g in a vaporizer) delivers the Focused and Calm qualities at a level that most people can work through. Double that dose and undefined takes the wheel — at this level, Magnum Feminized transitions from a functional hybrid into an intensely cerebral ride where thoughts connect in unusual ways and stimulus sensitivity increases.

Growers often find that the same batch produces slightly different effect profiles depending on harvest timing. Pulling plants when trichomes are mostly cloudy emphasizes the Focused and Calm qualities. Waiting for 20-30% amber shifts the experience toward heavier relaxation and thought deceleration. This gives the cultivator some control over the final product — something that experienced growers appreciate about Magnum Feminized specifically.

Real-world scenarios where this strain fits: a Saturday morning hike prep, studio session for musicians or artists, catching up with friends over a backyard fire. The Calm quality that surfaces late in the session ensures the landing is soft.

Flavor & Terpene Profile

Let's talk about what Magnum Feminized actually tastes like. The jar smell is butterscotch — not a hint of it, not a suggestion, but a confident statement. Breaking the bud open amplifies the honey and caramel undertones that were hiding beneath the surface. The grind fills the room.

The smoke itself carries butterscotch on the inhale with a texture that sits in the medium-body range. It is not wispy and it is not harsh — just a solid, flavorful draw that delivers the terpenes efficiently. The exhale is the interesting part: honey takes the lead position, with caramel providing a subtle finish that lingers for 15-20 seconds. Regular consumers learn to appreciate this transition — it is the same every session, which builds a flavor memory unique to Magnum Feminized.

Caryophyllene is the primary terpene here, contributing peppery, spicy notes and stress-reducing and mood-elevating properties that directly influence the quality of the high. Humulene plays second chair with hoppy, woody, herbal accents and its own appetite-suppressing and grounding pharmacological contribution. The interplay between these two terpenes is what separates Magnum Feminized from strains with similar THC content but less interesting smoke.

Growing tip related to flavor: the terpene profile responds to environmental stress during late flower. A mild temperature drop to 60-65°F during the final dark period can push terpene production slightly higher. This technique works best when combined with a 48-hour dark period before harvest. Avoid using heavy pesticides or foliar sprays during the last four weeks — anything you apply can end up affecting the terpene expression.

For the best flavor experience: vaporize at 345-365°F through a clean glass pathway. Combustion works but sacrifices approximately 30% of the volatile terpene compounds that make Magnum Feminized taste the way it does.

Growing Magnum Feminized in Canada

Real talk about growing Magnum Feminized: it does what the genetics say it will do, which is more than you can say for half the seeds on the market. This autoflower cultivar finishes in 70-85 days from germination, stays within 90-150cm indoors, and produces 400-550g/m² when the environment is dialed in.

Indoor Growing Profile: The hybrid structure means 2-4 plants per 4x4 depending on your training approach. This hybrid responds well to topping and spreads naturally with moderate LST. Lighting should target 600-800 PPFD during flower using full-spectrum LED.

The Canadian Outdoor Challenge: Every Canadian outdoor grower is racing the calendar. Autoflowering genetics give you a head start — the lifecycle is complete in under 90 days regardless of photoperiod, which means harvesting in August while the weather is still cooperating. 450-650g/plant per plant is achievable in full sun with proper soil preparation.

Height Management: From flip to final height, Magnum Feminized adds 60-100% during the flower stretch. Manage the stretch with supercropping or tie-downs during the first two weeks of flower.

Feeding Schedule Notes: Week-by-week adjustments produce the best results. Ramp nitrogen during veg weeks 2-4, taper during the transition, and push P-K ratios during weeks 3-6 of flower when calyx development peaks. Add silica throughout for stronger stems and enhanced trichome production.

Pest and Disease in Canadian Conditions: Fungus gnats thrive in the damp conditions common in Canadian basements. Use yellow sticky traps, let your medium dry slightly between waterings, and top-dress with diatomaceous earth. Powdery mildew is the other Canadian grow room nemesis — keep humidity below 50% in flower and maintain airflow. Open bud structures are naturally more resistant to mold but not immune.

Comparable strains worth considering: Head Cheese Feminized, Midnight Auto, Brainwreck Feminized. For growing fundamentals, reference our germination guide and our autoflower growing guide.

Post-Harvest Processing of Magnum Feminized

The work does not end at chop. How you process Magnum Feminized after harvest has as much impact on final quality as the entire grow cycle that preceded it. Growers often find this is where they either lock in everything they worked for or let it slip through their fingers.

Wet trim vs dry trim: The more open bud structure of this strain handles dry trimming well. Leaving the sugar leaves on during the drying phase protects the trichomes and slows the dry slightly, which preserves more terpenes. Either approach works — consistency is more important than the specific method.

Drying environment: 60°F, 55-60% relative humidity, complete darkness, gentle air circulation (fan on the wall, not pointed at the plants). In Canadian homes, fall and winter provide naturally cool conditions that support a slow dry. Summer growers may need to run a small air conditioner or dehumidifier to maintain proper conditions. The ideal dry takes 10-14 days. Under 7 days indicates the environment is too warm or dry. Over 18 days suggests it is too cold or humid.

Curing science: Curing is not simply about drying further — it is a controlled decomposition process where chlorophyll breaks down, starches convert to sugars, and terpene profiles develop their full complexity. Magnum Feminized benefits from extended curing because the Caryophyllene terpene develops slowly. Jars opened at two weeks will taste noticeably different (and better) than the same flower at four weeks. We recommend a minimum four-week cure for this strain.

Quality indicators to watch during cure: The butterscotch aroma should intensify gradually over the first 3-4 weeks. If you detect ammonia or hay-like smells, the flower was jarred too wet — open the jars immediately and allow additional drying before re-sealing. Properly cured Magnum Feminized should smell cleanly of butterscotch and honey with no off-notes. The buds should feel slightly sticky without being damp, and should break apart with a clean snap rather than crumbling to dust.

For more post-harvest techniques, refer to our germination guide. Comparable strains like Head Cheese Feminized and Midnight Auto respond to similar curing protocols.

Who Magnum Feminized Is For

Growers with a harvest or two under their belt are in the sweet spot for this strain. It expects basic competence but does not demand constant intervention. The autoflowering lifecycle removes the complexity of light schedule management, which is one less variable for beginners to worry about.

Indoor growers get the most consistent results with Magnum Feminized — the controlled environment lets the genetics express themselves fully. Outdoor growers in zones 5-7 can run this strain successfully, though timing the plant date to maximize the Canadian summer window requires planning.

Goal-based fit: - Yield hunters: Yields are respectable but not record-breaking — the quality of the flower compensates. - Flavor chasers: The butterscotch terpene profile makes this one worth growing for the taste alone. - Potency seekers: At 13-17% THC, the numbers are solid without being extreme.

Who should skip this one: Growers who want a single-purpose strain with one dominant trait. This hybrid does several things well rather than one thing perfectly.

How Magnum Feminized Compares

Where does Magnum Feminized sit among hybrid seeds available in Canada? Above average for flavor, competitive on potency at 13-17% THC, and on par with comparable strains in terms of cultivation demands.

The closest alternatives — Head Cheese Feminized or Midnight Auto — share the general hybrid profile but differ in specifics. Magnum Feminized wins on butterscotch terpene intensity. The Caryophyllene-dominant profile creates a flavor that is immediately identifiable, which is not something every strain can claim.

Among autoflowering options, Magnum Feminized represents the current state of auto genetics: potency and yield numbers that approach photoperiod levels with the convenience of a fixed lifecycle. The gap has closed significantly — five years ago, recommending an auto to a serious grower was a stretch. Today, it is a legitimate choice.

The standout trait: the genuine balance between physical and mental effects, which most hybrids claim but few actually deliver.

Effects

🧠Focused
76% of people reported feeling Focused
🧘Calm
67% of people reported feeling Calm
😌Relaxed
58% of people reported feeling Relaxed
😊Happy
51% of people reported feeling Happy
🤩Creative
50% of people reported feeling Creative
🤗Euphoric
40% of people reported feeling Euphoric
😎Uplifted
31% of people reported feeling Uplifted
🤤Hungry
27% of people reported feeling Hungry
😴Sleepy
24% of people reported feeling Sleepy

Best For

Anytime
Relaxation
Stress Relief

Strain Type

Indica 49%Sativa 51%

Strain Data Sheet

🧬THC15% - 20% (Medium-High)
🌿LineageGirl Scout Cookies × Gorilla Glue
🔬TypeFeminized Hybrid
🌡ClimateMediterranean, Temperate
📅HarvestMid - Late October
📏Height3.8 - 5.3 ft | 115 - 160 cm
⚖️YieldHigh
🏠Yield Indoor15.7 oz/ft² | 445 - 590 g/m²
🌳Yield Outdoor19 - 26 oz/plant | 545 - 740 g/plant
Flowering Time9 - 11 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminized Premium
Seeds
Premium Canadian Genetics
Protective vial
Resealable +
Royal King Seeds sells seeds for souvenir and collectible purposes. Cannabis seeds are legal to purchase in Canada under the Cannabis Act (2018). Customers are responsible for understanding local laws.
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Magnum Feminized
royalkingseeds.ca
IG
FB
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Magnum Feminized— Breeder & Stabilization Detail

Royal King Genetics

Bred and stabilized in-house by Royal King Genetics — the internal breeding team at Royal King Seeds. Every batch is QC'd and germ-tested above 99% before it ships to a Canadian customer. Read the full breeding process or learn more on the about page.

Stabilization Level
F4
Generations Worked
4+
Breeding Program
F4 Production Line — modern cross stabilization
Stabilization Notes — What This Means for Your Grow

Magnum has been worked across four cycles of pheno hunting and selection. Vigor, bud density, and finish window are all locked across the pack — every plant performs to the spec sheet we publish.

Breeding Goal

Stabilize the Magnum cross over four selection generations.

Selection Focus

Picked for vigor, terpene saturation, and a tight finishing window that lets growers plan a room.

Pollen / Mother Source

Royal King Genetics select-mother program — pollen drawn from an internally maintained reversed-female line.

Last Batch QC Verified
March 29, 2026· 99%+ germination
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