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Master Indoor Growing: 10 Tips for South African Cannabis Growers

Overgrow’s indoor grow guide: easy tips for lights, soil, nutrients, and harvest — made for South African growers and home setups.

Choose the Perfect Strain

Genetics set the foundation. Pick strains that suit your space and preferences. Autos are fast and compact, while photoperiods give full control. Browse Overgrow’s seed catalogue to find your perfect match.

Pick Your Growing Medium

Use well-aerated, nutrient-rich soil or coco coir. Beginners do best with premixed organic soil. Don’t forget pots and trays for drainage.

Know Your Nutrients

Use a cannabis-friendly nutrient pack with clear NPK ratios. Organic is ideal. Start light — most plants need less than the label suggests.

Get the Right Grow Light

LEDs are efficient, long-lasting, and perfect for South African growers dealing with load-shedding. CFLs work for seedlings. Avoid HIDs unless you're experienced.

Install Suitable Fans

Use an oscillating fan for airflow and stem strength. An extractor fan improves ventilation and prevents mold and pests.

Create a Thriving Environment

Light cycles: 18/6 for veg, 12/12 for flower. Ideal temps: 24°C day / ~20°C night. Use a thermometer and hygrometer to track your grow conditions.

Water & Feed Optimally

Water deeply, then wait for the top few cm of soil to dry. Feed lightly. Observe your plants and adjust as needed.

Train & Prune Plants

Top once or twice, tie branches, or use a SCROG net. Always remove excess leaves to boost airflow and prevent mold.

Know When to Harvest

Harvest when 10–30% of trichomes turn amber. Pistils darken and fan leaves yellow as buds ripen. Use a jeweller’s loupe to check closely.

Dry & Cure Correctly

Hang buds in a dark room at 50% humidity for 10 days. When stems snap, jar and burp daily for 4–8 weeks. Curing brings out aroma and smoothness.

Thanks to two Constitutional Court rulings — including the 2018 Prince judgment — adults in South Africa are legally allowed to grow cannabis for personal use, discreetly, responsibly, and within one's private space. Buy cannabis seeds at Overgrow — go grow your own.