Breaking down the nutrient requirements for each stage of cannabis growth by macro and micronutrients can be complex, as the ideal feed rate can vary depending on factors such as the strain, growing medium, and environmental conditions. However, here’s a general guideline for cannabis nutrient ratios at different growth stages:
(0-2 WEEKS)
| Nitrogen (N) | 10-20 ppm |
| Phosphorus (P) | 5-10 ppm |
| Potassium (N) | 10-20 ppm |
Micronutrients
Apply at very low concentrations, following the recommended dosage for the specific fertilizer you are using.
(2-8 WEEKS)
| Nitrogen (N) | 100-200 ppm |
| Phosphorus (P) | 50-100 ppm |
| Potassium (N) | 100-200 ppm |
Micronutrients
Apply at low to moderate concentrations, following the recommended dosage for the specific fertilizer you are using.
(1-2 WEEKS INTO FLOWERING)
| Nitrogen (N) | 80-160 ppm |
| Phosphorus (P) | 80-160 ppm |
| Potassium (N) | 160-320 ppm |
Micronutrients
Apply at moderate concentrations, following the recommended dosage for the specific fertilizer you are using..
(2-5 WEEKS INTO FLOWERING)
| Nitrogen (N) | 60-120 ppm |
| Phosphorus (P) | 120-240 ppm |
| Potassium (N) | 240-480 ppm |
Micronutrients
Apply at moderate to high concentrations, following the recommended dosage for the specific fertilizer you are using.
(5-8 WEEKS INTO FLOWERING)
| Nitrogen (N) | 40-80 ppm |
| Phosphorus (P) | 160-320 ppm |
| Potassium (N) | 320-640 ppm |
Micronutrients
Apply at high concentrations, following the recommended dosage for the specific fertilizer you are using.
(1-2 WEEKS BEFORE HARVEST)
| Nitrogen (N) | 0 ppm |
| Phosphorus (P) | 0 ppm |
| Potassium (N) | 0 ppm |
Micronutrients
Apply at very low concentrations or not at all, depending on the specific fertilizer you are using.
These values are approximate and should be used as a starting point. It’s crucial to monitor your plants’ health and adjust nutrient concentrations accordingly, as individual plants may require different nutrient levels. Additionally, be sure to use high-quality, cannabis-specific nutrients to ensure the best results for your indoor grow.
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FLO Nutrients is centered around creating better, more efficient liquid fertilizers to increase both a crop’s yield and longevity.
