Growing organic cannabis without chemicals. Organic fertilisers, living soil and natural methods for sustainable cultivation.
Organic cannabis cultivation without chemical fertilisers and pesticides:
Advantages of Organic Growing:
- Better flavour and smell
- Smoother, less scratchy smoke
- Environmentally friendly and sustainable
- More cost effective in the long term
- More complex terpene profiles
- No chemical residues
Living Soil
The centrepiece of organic cultivation.
Base mixture:
- 1/3 peat moss or coco
- 1/3 compost or worm humus
- 1/3 perlite or pumice
- Activated carbon for microbes
- Mycorrhiza fungi
Organic additives:
- Kelp-Meal (seaweed) - potassium and trace elements
- Neem-Meal - nitrogen and pest protection
- Bone meal - phosphorus for flowering
- Blood meal - quickly available nitrogen
- Bat guano - balanced NPK source
Compost tea (microbe booster)
Make living microorganisms available to the plant.
Simple recipe:
- 5 litres of dechlorinated water
- 2 tbsp high quality compost
- 1 tbsp molasses (food for microbes)
- aerate for 24-48h with an air pump
- Use immediately after preparation
Advanced Tea:
- Additionally Kelp-Meal, fish emulsion
- Humic/Fulvic acids
- EM (Effective Microorganisms)
- Various bacterial strains
Organic pest control:
Preventive measures:
- Companion plants (basil, lavender)
- Attract and keep beneficial insects
- Strong, healthy plants through good nutrition
- Clean, hygienic growing environment
Natural treatments:
- Neem oil against most pests
- Diatomaceous earth against crawling insects
- Soapsuds against aphids
- Predatory mites against spider mites
- BT (Bacillus thuringiensis) against caterpillars
No-Till Organic Method
Soil is never dug up, but continuously improved.
Advantages:
- Preserves microbial network
- Less work after setup
- Continuous improvement
- Self-regulating in the long term
Mulching:
- Straw or dried leaves as mulch
- Protects against dehydration
- Slowly feeds microbes
- Prevents weeds naturally
Organic fertiliser schedule:
Vegetative phase:
- Weekly compost tea
- Kelp meal tea every 2 weeks
- Fish emulsion if required
Flowering phase:
- Phosphorus-rich supplements (bone meal tea)
- Molasses for flavour
- Less nitrogen-rich fertiliser
Tips for beginners:
- Start with ready-made organic soil
- Slowly develop your own mixtures
- Patience - organic takes longer
- pH often regulates itself
- Microbes are more important than NPK values