Blackberry Kush
80% Indica
Elite Strain for Experienced Growers
Indoor & Outdoor Success
Rich Resinous Buds- Trichome-Coated Cannabis Buds
Up to 30% THC
How to Grow Blackberry Kush Seeds (2025 Grow Diary)
Blackberry Kush is an indica-dominant classic (80% indica / 20% sativa) bred from Afghani × Blackberry. It delivers a sweet, berry-forward flavor with nutty and jammy notes, while offering focused and happy effects. According to Hypno Seeds, it can reach up to 30% THC, with up to 2% CBD. Plants stay relatively compact (40–50 in), finish in 8–9 weeks, and yield 1.6–1.8 oz/ft² indoors or 15–25 oz/plant outdoors. Harvest usually comes at the end of September.
If you’ve been asking how to grow Blackberry Kush strain, consider this your blueprint.
👉 Shop Blackberry Kush seeds at Hypno Seeds
🔗 Learn more about Blackberry Kush strain on Leafly
Setup Checklist for Growing Blackberry Kush Seeds
Blackberry Kush is well-suited for growers who want resinous buds, rich flavor, and manageable height.
🏕️ Indoor Setup
- Tent: 2×2 ft minimum (3×3 recommended for room)
- Lighting: Full-spectrum LED (300–600W equivalent)
- Ventilation: Inline fan + carbon filter
- Airflow: Oscillating fan across canopy
- Pots: 3–5 gallon fabric or equivalent
- Medium: Soil or coco + perlite mix
- Nutrients: Balanced veg & bloom formulas + Cal-Mag
- Water: pH 6.2–6.6
- Humidity control: Dehumidifier or humidifier as needed
🌞 Outdoor Notes
- Climate: Warm, dry or Mediterranean conditions work best
- Soil: Rich, well-draining, with organic amendments
- Support: Use stakes or trellis for heavy colas
- Pest defense: Netting or organic sprays if needed
Germination: Starting Your Blackberry Kush Grow
Use the paper towel method:
- Place seeds between two damp (not soaked) paper towels.
- Sandwich them between plates for darkness + airflow.
- Keep at ~70–75°F and check daily.
- Once taproot ~½ inch, transplant root-down about ½ inch into your medium.
⚠️ Don’t seal seeds in plastic—too much moisture invites rot.
Week 1: Seedling Stage
What to Expect
- Height: 1–2 inches
- Growth: Cotyledons, then first true leaves
- Color: Bright, vibrant green
Environment Targets
- Light: 18–24h, low intensity (~25–30 in)
- Temp: 72–77°F
- Humidity: 65–70%
- Water: Gentle ring around stem
- Nutrients: None (or light Cal-Mag in inert media)
Tip: Keep soil moist but not soggy; airflow helps avoid mold.
Week 2: Early Veg
What to Expect
- Height: 2–4 inches
- Growth: More fan leaves, stronger stems
- Structure: Tight indica internodes
Environment Targets
- Light: 18h, ~300 PPFD
- Temp: 73–78°F
- Humidity: 60–65%
- Nutrients: Begin veg feed (¼ strength)
Optional: Gentle LST helps flatten canopy and opens light penetration.
Week 3: Veg Expansion
What to Expect
- Height: 6–10 in
- Growth: Full canopy, leaf area expands
- Branching: Strong lateral development
Environment Targets
- Light: 18h, ~400 PPFD
- Temp: 73–78°F
- Humidity: 55–60%
- Nutrients: Raise veg feed to ½ strength
Additional Info: Blackberry Kush responds well to topping or LST now, maximize bud sites without sacrificing height control.
Week 4: Pre-Flower & Final Training
What to Expect
- Height: 12–16 in
- Structure: Bushy, well-branched
- Aroma: Early berry/nut hints
Environment Targets
- Light: 18/6, ~500 PPFD
- Temp: 72–78°F
- Humidity: 50–55%
- Nutrients: Full veg strength
Prep: Finish training, remove lower growth, and prep for switch to 12/12.
Week 5: Flower Begins
What to Expect
- Height: 18–24 in
- Buds: Pistils emerge at nodes
- Smell: Sweet berry aroma starts to dominate
Environment Targets
- Light: 12/12 cycle, ~600 PPFD
- Temp: 72–78°F
- Humidity: 45–50%
- Nutrients: Switch to bloom feed (higher P & K)
Week 6: Bud Sites & Trichome Development
What to Expect
- Height: 24–30 in
- Buds: More defined sites across colas
- Trichomes: Start forming sparkle
- Smell: Intense berry + nut + light sour notes
Environment Targets
- Light: 12/12, ~600–700 PPFD
- Temp: 70–77°F
- Humidity: ~45%
- Nutrients: Bloom + Cal-Mag boost
Week 7–8: Bud Fattening & Aroma Surge
What to Expect
- Height: ~30–35 in
- Buds: Swelling, dense, resinous
- Aroma: Full berry jam, earthy-nut base with sweet sour fuel hints
- Trichomes: Nearly full frost
Environment Targets
- Light: 12/12, ~700–800 PPFD
- Temp: 68–75°F
- Humidity: 40–45%
- Nutrients: Bloom maintenance; optional terp boosters
Tips: Use supports for heavy colas; avoid overfeeding (watch leaf tips).
Week 9: Final Flush & Ripeness Check
What to Expect
- Buds: Fully formed, sticky, aromatic
- Pistils: Mostly darker (70–90%)
- Trichomes: Majority cloudy, 10–20% amber
Environment Targets
- Light: Maintain 12/12
- Temp: 65–70°F
- Humidity: 35–40%
- Water: Flush with plain pH’d water for 5–7 days
Harvest: End of September—harvest when trichome maturity aligns with desired effect (cloudy/amber).
Harvest & Curing
- Drying: 60°F / 55% RH, in darkness, for 10–14 days
- Curing: Jar and burp daily first week, weekly thereafter
- Result: Sweet, jammy-berry buds with earthy, sour, nutty complexity
Final Thoughts on Growing Blackberry Kush Seeds
Blackberry Kush is a flavorful powerhouse in a compact package. With proper training, drying, and curing, its berry-forward profile and balanced effects really shine. Great for growers seeking high flavor, manageable height, and quality yields.
If you’re searching for how to grow Blackberry Kush strain, this diary gives you a full roadmap from seed to jar.
Blackberry Kush
- 80% Indica
- Elite Strain for Experienced Growers
- Indoor & Outdoor Success
- Rich Resinous Buds
- Trichome-Coated Cannabis Buds
- Up to 30% THC
👉 Shop Blackberry Kush seeds at Hypno Seeds
👉 Browse more Indica Seeds
🔗 Learn more about Blackberry Kush strain on Leafly
FAQ: Growing Blackberry Kush Seeds
How long does Blackberry Kush take to flower?
8–9 weeks, with harvest around end of September.
How tall does Blackberry Kush grow?
Usually 40–50 inches — compact and ideal for indoor grows.
What yields can I expect from Blackberry Kush?
Indoors: 1.6–1.8 oz/ft². Outdoors: 15–25 oz/plant.
What effects does Blackberry Kush have?
Focused, happy, relaxing — balanced and flavorful.
What does Blackberry Kush taste like?
Rich berries, jammy sweetness, nutty undertones, and a touch of sour fuel.
