Alpine Star cannabis seeds packaging — Royal King Seeds South Africa
Indica
THC 24%
🌙 Night-Time
IndicaFeminisedIn Stock

Alpine Star Feminised

Buy Alpine Star Feminised seeds in South Africa. Indica · 24% THC · relaxed, sleepy, happy. Every figure on this page is sourced, and every order ships unbranded.

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R203.10ZAR
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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 2026-02-28 on 375 seeds.

Germination rate: 97.9% (n=375)
Last QC test date: 2026-02-28
Indoor yield: 495-674 g/m² (avg across 7 verified grower reports)
Outdoor yield: 459-666 g/plant (avg across 10 verified grower reports)

About Alpine Star Feminised

The way to plan Alpine Star is backwards from the day you intend to cut, with Up to 350g/m² per square metre indoors and Up to 400 gr per plant outdoors as the figures you are working toward, at 24% THC. Count 49-63 days indoors, harvest late September outdoors 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 Alpine Star — the Up to 350g/m² indoors and Up to 400 gr outdoors quoted above — is decided in three short stretches of the 49-63 days indoors, harvest late September outdoors 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 myrcene 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 49-63 days indoors, harvest late September outdoors. Stands Short. Indoors it returns Up to 350g/m². Outdoors, Up to 400 gr a plant.

What Alpine Star Is Like to Use

The effects most commonly reported for this cultivar are relaxed, sleepy, happy. At 24% 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 Myrcene/Humulene pairing leaves an earthy sweetness with a fruit finish on the palate.

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

The Aromatic Three

Leading with Myrcene, then Humulene, and Linalool underneath. Read across a cure, these three compounds do not stay in the same order. Fresh off the dry, myrcene leads. After three or four weeks in sealed glass at 16-18°C the linalool undertone comes up and the bouquet gains a layer it did not have at harvest. Vaporising between 180°C and 195°C captures the widest span of them — run it hotter and the volatile linalool molecules are the first thing you lose.

Suitability and Recommendations

Alpine Star 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 49-63 days indoors, harvest late September outdoors bloom in the frost-free provinces. Posted discreetly anywhere in South Africa, with sourced grow figures shown on every strain page.

Effects

😌Relaxed
😴Sleepy
😊Happy

Reach For It When

Evening
Relaxation
Sleep Support

Strain Type

Indica 65%Sativa 35%

At a Glance

🧬Potency24% - 29% (High)
🌿ParentsTahoe OG × Sensi Star
🔬Seed TypeFeminised Indica
🌡SuitsHighveld and the drier interior
📅Cut InMarch – May outdoors, planted Sept – Nov
📏Grows ToShort
⚖️Typical ReturnMedium
🏠Under LightUp to 350g/m²
🌳In the GroundUp to 400 gr
Weeks in Bloom49-63 days indoors, harvest late September outdoors

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.
1
Alpine Star Feminised
royalkingseeds.co.za
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🛡️Foil-lined inside
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Alpine Star 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
BX2
Generations
3+
Breeding Programme
Backcross Stabilisation (BX2) — modern hybrid fixing
Stabilisation Notes — What This Means for Your Grow

The Alpine Star hybrid sits in the middle of the modern dispensary lineage. Two backcross rounds layered on top of the original cross have locked resin density and finish-time uniformity across the pack.

Breeding Goal

Stabilise the Alpine Star cross into a seed-uniform line.

Selection Focus

Chosen for purple/dark expression where it shows, dense bud structure and a true indica relaxation profile.

Pollen / Mother Source

Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
11 August 2026· 95% germination guarantee