Blue Magoo cannabis seeds packaging — Royal King Seeds South Africa
Indica
THC 15%
😄 Upbeat
IndicaFeminisedIn Stock

Blue Magoo Feminised

Buy Blue Magoo Feminised seeds in South Africa. Indica · 15% THC · euphoric, calm. Every figure on this page is sourced, and every order ships unbranded.

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R270.86ZAR
1
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🌱Germination Cover
🔒Nothing on the Box

Royal King Genetics — Seed-Lot Testing

Figures below come from our own seed-lot testing rather than breeder marketing, taken from a single batch tested 2026-04-15 on 375 seeds.

Germination rate: 99.0% (n=375)
Last QC test date: 2026-04-15
Indoor yield: 441-580 g/m² (avg across 9 verified grower reports)
Outdoor yield: 561-798 g/plant (avg across 4 verified grower reports)

About Blue Magoo Feminised

The way to plan Blue Magoo is backwards from the day you intend to cut, with up to 350 g/m2 per square metre indoors and up to 475 g/plant per plant outdoors as the figures you are working toward, at 15% THC. Count 50-60 days back from that date and you have your flip date. Most of the final weight lands between weeks 5 and 8, when calyxes stack fastest and trichome cover goes from patchy to complete. Outdoors in the Southern Hemisphere you want that fattening phase falling in February while the days are still long, which puts a late-March cut about right for most of the country.

Where the Weight Actually Comes From

Yield on Blue Magoo — the up to 350 g/m2 indoors and up to 475 g/plant outdoors quoted above — is decided in three short stretches of the 50-60 days bloom rather than evenly across it.

The first ten days after the flip. Whatever stretch happens here sets your canopy, and an uneven canopy wastes light for the remainder of the grow. Stretch is modest at 20-30%. Strip the lower fan leaves around day seven and that energy goes into bud sites instead.

Weeks three to five. This is when linalool production climbs, and it answers to the gap between day and night temperature rather than to either number on its own. Keep at least 6-8°C between them. Outdoor growers in the interior provinces get that swing free in March and April; indoors, aim for 25-26°C lights-on against 18-20°C lights-off, with potassium-led bloom feed at EC 1.6-1.8.

The last ten to fourteen days. Stop feeding, flush with pH-corrected water, and read trichomes daily under a 60x loupe. Cut at 15-20% amber for the heavy end of what this genetics does. Outdoors that usually lands between late March and mid-April.

Difficulty: intermediate. In flower for 50-60 days. Stands Short. Indoors it returns up to 350 g/m2. Outdoors, up to 475 g/plant a plant.

What Blue Magoo Is Like to Use

The effects most commonly reported for this cultivar are euphoric, calm. At 15% THC it sits in a bracket where the dose does most of the work. A single bowl vaporised at 185°C gives a manageable body relaxation with your head still intact — enough to close out a long day in the summer heat. Push the dose and it moves decisively toward physical sedation, which is how it tends to end up as a winter evening cultivar. The Linalool/Myrcene pairing leaves a shifting profile that keeps turning up new notes on the palate.

Where it fits: quiet evenings, a film, recovery after exercise, and the hours before sleep.

The Aromatic Three

Leading with Linalool, then Myrcene, and Caryophyllene underneath. How this combination survives the move from flower to vapour or smoke is not a given. Held low, at 180-188°C, the myrcene and caryophyllene notes stay legible with linalool underneath them. Run it hotter, or burn it, and the three collapse into one — still pleasant, but without the separation that makes this cultivar worth paying attention to.

Suitability and Recommendations

Blue Magoo is a reasonable fit for growers with the basics already in place. Understand pH, know roughly what nutrient ratios do, and be able to hold a light cycle — it will not carry you, but it does not punish the occasional slip either. Photoperiod genetics leave size and timing in your hands — hold it in veg for a bigger plant, or flip early when headroom is the constraint. A September-to-May outdoor season comfortably covers a 50-60 days bloom in the frost-free provinces. Posted discreetly anywhere in South Africa, with sourced grow figures shown on every strain page.

Effects

🤗Euphoric
🧘Calm

Reach For It When

Evening
Relaxation
Sleep Support

Strain Type

Indica 88%Sativa 12%

At a Glance

🧬Potency15% - 19% (Medium-High)
🌿ParentsBlueberry × Williams Wonder F2
🔬Seed TypeFeminised Indica
🌡SuitsHighveld and the drier interior
📅Cut InMarch – May outdoors, planted Sept – Nov
📏Grows ToShort
⚖️Typical ReturnMedium
🏠Under Lightup to 350 g/m2
🌳In the Groundup to 475 g/plant
Weeks in Bloom50-60 days

In the Packet

Reseals +
RK
Royal King Seeds
Photoperiod
Feminised Premium
Seeds
Inside the Packet
Sealed vial
Reseals +
Royal King Seeds sells seed as an adult collectible and for the preservation of genetics. Knowing and following the law where they live.
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Blue Magoo Feminised
royalkingseeds.co.za
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💧Water-resistant outer
🛡️Foil-lined inside
🏷️Tamper sticker
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Blue Magoo Feminised — Breeder Information

Royal King Genetics

Recreated and stabilised by Royal King Genetics , the breeding team behind this catalogue. Seed lots are germination-tested before they ship. More on the breeding process and about page.

Stabilisation Level
F4
Generations
4+
Breeding Programme
Filial Stabilisation (F4) — four-generation selection
Stabilisation Notes — What This Means for Your Grow

A modern hybrid cross stabilised over four generations of selection. Blue Magoo grows true-to-type with the purple expression that defines the cultivar.

Breeding Goal

Cull off-type phenos in Blue Magoo through filial selection.

Selection Focus

Chosen for trichome coverage, stout structure and consistent flowering time across the pack.

Pollen / Mother Source

Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.

Last Batch QC Verified
19 January 2026· 95% germination guarantee