Indoor Cannabis Growing for Beginners
Indoor Cannabis Growing
for Beginners
Complete 2026 guide: from seed to harvest. Simple, affordable setup, week-by-week schedule, common mistakes to avoid, and everything you need to grow high-quality cannabis at home.
Basic Indoor Grow Setup
Space
2×2 ft or 3×3 ft tent is perfect for 1–4 plants. Closet or spare room also works.
Lighting
Full-spectrum LED (200–400W) is best. Cheap CFLs work for tiny starts but not recommended long-term.
Budget Starter Kit (\~$200)
- • LED grow light
- • 2×2 or 3×3 tent
- • Small fan + carbon filter
- • 3–5 gallon fabric pots
- • Basic pH meter + nutrients
Week-by-Week Timeline
Soak seeds in water 12–24 hrs, plant in moist soil or starter plugs. Keep warm (75–80°F) and humid. First leaves appear in 3–7 days.
18 hours light / 6 hours dark. Plants grow tall and bushy. Water when top inch of soil is dry. Train with low-stress techniques (LST).
Switch to 12/12 light schedule. Buds form and fatten. Lower humidity to 40–50%. Support heavy colas.
Trichomes turn milky/amber. Cut plants, hang dry 7–10 days, then cure in jars for 2+ weeks.
Temperature, Humidity & Airflow
| Stage | Temperature | Humidity | Airflow |
|---|---|---|---|
| Seedling | 75–80°F | 70–80% | Gentle |
| Vegetative | 70–78°F | 50–70% | Medium |
| Flowering | 68–76°F | 40–50% | Strong |
Feeding & Watering Basics
Watering Rule
Water only when top 1–2 inches of soil are dry. Use pH 6.0–6.5 water. Overwatering is the #1 beginner mistake.
Nutrients
Start with half-strength veg nutrients in week 3. Switch to bloom nutrients when flowering begins. Flush with plain water last 2 weeks.
Avoid These Beginner Errors
Final Tip
Patience is the most important skill. Take notes, learn from each grow, and enjoy the process. Start small — one or two plants is perfect for beginners.
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