How to grow Blueberry OG
- Breeder: Herbies
- Genetics: Mostly Indica
- THC: up to 26%
- Type: Photoperiod, feminized seeds
- Difficulty: easy
- Flowering: about 7 to 9 weeks
- Flavors: earthy, berry
Blueberry OG is an Indica-dominant photoperiod strain (26% THC) with forest-fruit and blueberry aroma plus musk and sandalwood, giving a gentle, mood-lifting, anxiety-free body high.
What is specific about Blueberry OG
- Growers rate this beginner-friendly, forgiving of small mistakes.
- Very high THC, nutrient-hungry in flower; ramp feeding gradually and watch for tip burn.
Indoor calendar for Blueberry OG
| Stage | When | Note |
|---|---|---|
| Germination | week 1 | Warm, humid and dark until the sprout shows. |
| Seedling | weeks 2 to 3 | Gentle light on 18/6. |
| Vegetative | weeks 4 to 7 (you decide) | Three to six weeks on 18/6; longer growth means a bigger plant. |
| Flowering | 7 to 9 weeks after the switch to 12/12 | Expect the plant to stretch in the first two to three weeks. |
| Harvest | around week 14 to 18 | Depends on how long you let it grow first. |
| Dry and cure | three to four weeks more | One to two weeks drying, then at least two weeks curing in jars. |
About 17 to 22 weeks from seed to cured buds, with 7 to 9 weeks of flowering.
Week by week
Germination: Days 1–7
Pop the seed.
- Soak in a moist paper towel or plant 1cm deep in light, airy soil.
- Keep warm (22–25°C), humid and dark until the sprout appears.
- Moist, never soggy.
Seedling: Weeks 2–3
First true leaves.
- Gentle light on 18/6, high humidity (~65%).
- Tiny waterings near the stem; let the top dry between.
- Quarter-strength nutrients at most.
Vegetative: Weeks 4–7 (you control length)
Build the plant.
- Photoperiod: keep 18/6 as long as you want size, then flip to 12/12 to begin flowering.
- Feed grow (high-N) nutrients; train (LST/topping) for an even canopy.
- Indica-leaning: bushier/compact, keep airflow between colas.
Flowering: ~7–9 weeks of bloom
Buds bulk up.
- Now on 12/12. Expect a 2–3 week stretch early, give headroom.
- Switch to bloom (high-P/K) nutrients; lower humidity (~45%) to prevent bud rot.
- Watch trichomes: mostly cloudy with some amber = peak ripeness.
Flush & harvest: Final 1–2 weeks
Finish clean.
- Plain water (no nutrients) the last 1–2 weeks for a smoother smoke.
- Harvest, wet-trim, dry slowly (~60°F / 60% RH, 7–14 days).
- Cure in jars 2+ weeks, burping daily at first.
~14–17 weeks (plus veg time).
Growing Blueberry OG outdoors
Outdoors in central Europe photoperiod plants start flowering in early to mid August, so Blueberry OG, with 7 to 9 weeks of flowering, is usually ready in mid September to mid October. That is late in the season: autumn rain and cold bring bud rot, so it suits a greenhouse, a dry southern spot or an indoor grow better than an open northern garden.
Drying and curing
Its berry notes come from the most volatile terpenes, the first to go in a warm, fast dry. Dry slowly around 18 °C and 60% humidity for 10 to 14 days and cure in jars to keep them.
How Blueberry OG compares
At 7 to 9 weeks it finishes faster than 70% of the 98 photoperiod strains in our guides (typical: 8.5 weeks).
Its THC, up to 26%, is above the typical 20% for these photoperiod strains.
Bred by Herbies, one of 50 Herbies strains with a grow guide here.
| Similar strain | Flowering | THC | Breeder |
|---|---|---|---|
| CBG-Force | 7 to 9 weeks | 5% | Dutch Passion |
| Frisian Dew | 7 to 9 weeks | 15% | Dutch Passion |
| Frisian Duck | 7 to 9 weeks | 10% | Dutch Passion |
| Master Kush | 8 weeks | 20% | Dutch Passion |
Effects
uplifting, relaxing, pain relief
Grower verdict: 8 reviews, average 5/5.
Questions
Is Blueberry OG easy to grow?
Blueberry OG is considered easy to grow. This read draws on 8 grower reviews.
When is Blueberry OG ready outdoors?
Outdoors in central Europe photoperiod plants start flowering in early to mid August, so Blueberry OG, with 7 to 9 weeks of flowering, is usually ready in mid September to mid October. That is late in the season: autumn rain and cold bring bud rot, so it suits a greenhouse, a dry southern spot or an indoor grow better than an open northern garden.
How strong is Blueberry OG?
The breeder lists up to 26% THC. Real results depend on light, feeding and harvest timing.
When should I switch Blueberry OG to 12/12?
When the plant is about half the final height you want: it can double in size during the first weeks of flowering. Flowering then takes about 7 to 9 weeks.
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