Organic fertilisers promote soil life and sustainable growth. Use compost, worm humus and natural amendments correctly.
Organic fertilisation creates living soil and sustainable cannabis production:
Organic fertiliser basics:
Benefits of organic fertilisation:
- Long-term nutrient release
- Build-up of soil life
- Improved soil structure
- Environmentally friendly production
- Flavour improvements
Nutrient availability:
- Slow, controlled release
- Microbial conversion required
- Temperature-dependent activity
- pH value influences availability
- Biological buffering effect
Base components:
Compost:
- Basis for organic substrates
- Rotted organic materials
- NPK ratio about 1-1-1
- Improves water retention capacity
- Activates soil life
Worm humus (vermicompost):
- Premium organic fertiliser
- High nutrient availability
- Excellent soil improvement
- Rich in beneficial microorganisms
- Cannot be overdosed
Slurry (rotted):
- High nitrogen content
- Must be completely decomposed
- Cattle, horse, chicken manure
- compost for 6-12 months
- Pathogen risk with fresh manure
Special organic amendments:
Kelp meal (seaweed meal):
- Rich in trace elements
- Natural growth hormones
- Improves stress resistance
- Promotes micronutrient uptake
- 1-2 tablespoons per litre of substrate
Bat Guano:
- Highly concentrated nutrients
- Different NPK ratios
- Bat vs. seabird guano
- Immediate and slow release
- Careful dosing necessary
Bone meal:
- High phosphorus content (0-12-0)
- Ideal for flowering phase
- Slow release
- Calcium as a bonus
- 1-3 tablespoons per litre
Blood meal:
- High nitrogen content (12-0-0)
- Quickly available
- Vegetative phase ideal
- Can attract pests
- Dose sparingly
Super Soil mixtures:
Basic Super Soil recipe:
- 40% basic soil
- 30% compost/worm humus
- 20% drainage (perlite/vermiculite)
- 10% amendments (kelp, guano, etc.)
- 4-6 weeks composting
Advanced Super Soil:
- Additional minerals
- Mycorrhiza fungi
- Beneficial Bacteria
- Long-term amendments
- More complex nutrient profiles
Liquid organic fertilisers:
Compost Tea:
- Extract compost in water
- 24-48h with aeration
- Rich in beneficial microbes
- Weekly application
- Use fresh
Fish Emulsion:
- Quickly available nitrogen
- High biological activity
- Strong odour
- Dilution important (1:10)
- Vegetative phase ideal
Molasses feeding:
- Food for soil microbes
- Promotes microbial activity
- Improves nutrient cycling
- 1 tablespoon per litre of water
- Combine with other fertilisers
Timing of organic fertilisation:
Pre-Plant Preparation:
- Prepare substrate for 4-6 weeks
- Incorporate amendments
- Wait for composting process
- pH stabilisation
- Develop biological activity
Vegetative feeding:
- Nitrogen-emphasised amendments
- Compost Tea weekly
- Fish Emulsion diluted
- Kelp Meal monthly
- Use slow release
Bloom feeding:
- Phosphorus/Potassium Focus
- Bat Guano (High