100% success rate with these seeds, and a great strain! I tried some seeds from another distributor, and they were all duds. Had a few of these left over, from a few years ago and they grew long tap roots in one day! Very happy with the quality of seeds at the seed pharm.
Austin, on Pineapple Express Feminized Seeds, November 2025
Alpine Star Autoflower Seeds
Citrus arrives first, then earth and a clean hint of pine settle in behind it. Tahoe OG crossed with Sensi Star, 80% indica, and the effect matches: heavy, physically relaxing, quick to arrive and best kept for the evening.
Shipping is $10, free over $99. Orders over $100 get 10 free seeds, and orders over $200 get 20. Every pack is covered by our 90% germination guarantee. Charged in USD.
ships free
20 at $200
or we replace them
the outside of the box
About Alpine Star
About Alpine Star
Citrus arrives first on the inhale, broad and mouth-filling, before earthy notes and a clean hint of pine settle in behind it. That two-stage flavour is what separates Alpine Star from the pack, and it is backed by a soft lemon aroma that is noticeable without ever taking over a room. The scent is mellow at first and builds as you work through the bud, sweet rather than musky.
Alpine Star came out of Mendocino stock and earned its reputation in Michigan, where Detroit growers kept it alive. Genetically it is Tahoe OG crossed with Sensi Star, an 80% Indica-dominant plant carrying roughly 24% THC alongside a moderate CBD level. The flowers are small and light green, wrapped in orange pistils and a heavy frost of trichomes over darker green leaf.
The effect follows the Indica lean: heavy, physically relaxing, and quick to arrive, holding on for several hours. Many growers report it works best in the evening, though the Sativa side keeps it from being a complete write-off during the day. At this potency it pays to start with a small amount and work up.
Growing Alpine Star Autoflower Seeds
This is a ruderalis-influenced autoflowering line, so the plant starts flowering on age rather than on any change to your light schedule. There is no 12/12 flip to time and no need to keep separate veg and flower spaces. Run 18 to 20 hours of light straight through and let the genetics handle the timing.
Alpine Star does ask for more attention than an average auto. It is not the most forgiving plant in the tent, so the usual auto discipline matters more than usual here: germinate directly into the final container, avoid transplant shock, feed lightly for the first fortnight, and skip topping entirely. An auto that stalls in week three cannot make up the lost time later. Keep root temperatures steady and the medium airy and this strain rewards you.
Because the cycle is short and self-timing, outdoor Canadian growers can stagger sowings and pull two runs off a single summer, or slot plants onto a balcony where a photoperiod plant would never finish before the light drops off.
What to Expect
- Flowering: 55 to 65 days, no light-cycle switching required
- Height: medium and manageable, easily kept inside a small tent
- Indoor yield: up to 350 g/m²
- Outdoor yield: around 400 g per plant
- Difficulty: moderate, better suited to a grower with a run or two behind them
It tolerates indoor, outdoor and greenhouse conditions with broadly similar results, so pick whichever environment you can keep stable.
Strain label
Alpine Star Autoflower Seeds · The Seed Pharm- Seed type
- Autoflower Seeds
- Lineage
- Tahoe OG x Sensi Star
- Indica / sativa
- Indica-dominant (~75% Indica / 25% Sativa)
- THC
- 24% THC
- Flowering time
- 8-10 weeks
- Height
- Medium (100-150 cm)
- Outdoor yield
- 400 g per plant
- Grows
- Indoor/Outdoor
Read next: Autoflower outdoor growing · How to germinate seeds · Prairie guide
Alpine Star Auto pack prices
| Pack | Price | Per seed | You save | Bonus seeds | Shipping |
|---|---|---|---|---|---|
| 3 seeds | $39 | $13.00 | Base price | None | $10 |
| 5 seeds | $55 | $11.00 | $10 (15%) | None | $10 |
| 10 seeds | $105 | $10.50 | $25 (19%) | 10 free | Free |
| 20 seeds | $180 | $9.00 | $80 (31%) | 10 free | Free |
Prices in USD. Savings are against the 3-seed price per seed. Bonus seeds are added at checkout once your whole order passes $100, and 20 once it passes $200.
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