nutrients cannbis feeding


by | Jan 15, 2024 | Knowledgebase

Feeding cannabis plants involves providing them with essential nutrients to support healthy growth and maximize yields. Proper nutrient management is crucial for cultivating robust and vigorous cannabis plants. Here’s an overview of the key aspects of feeding cannabis plants:

Essential nutrients

Cannabis plants require several essential nutrients for growth. These nutrients are broadly categorized into two groups:

Macronutrients:– Nitrogen (N): Important for vegetative growth, leaf development, and overall plant vigor.– Phosphorus (P): Essential for root development, flower formation, and energy transfer.– Potassium (K): Crucial for overall plant health, flowering, and stress resistance.

Secondary Macronutrients:– Calcium (Ca): Supports cell wall structure and overall plant development.– Magnesium (Mg): A component of chlorophyll and essential for photosynthesis.– Sulfur (S): Important for protein synthesis and overall plant health.

Micronutrients:– Iron (Fe), Manganese (Mn), Zinc (Zn), Copper (Cu), Boron (B), Molybdenum (Mo), and Chlorine (Cl): Required in smaller quantities but are still vital for various physiological functions.


Types of Nutrient Solution 

 Nutrient solutions can come in various forms, including:

Pre-Mixed Solutions: These are ready-to-use nutrient solutions that provide a balanced mix of essential nutrients for different stages of growth (e.g., vegetative, flowering). 

Two-Part Nutrient Systems: Some growers prefer using two-part nutrient systems, typically a “Grow” formula for vegetative growth and a “Bloom” formula for flowering. This allows for more control over nutrient ratios.

Organic Nutrients: Organic growers may opt for organic nutrient solutions that rely on natural sources and microbial activity to release nutrients gradually.

– Custom Nutrient Regimens: Experienced growers often create custom nutrient regimens by adjusting the ratios of individual nutrients based on the specific needs of their plants.

pH Management

The pH level of the nutrient solution is crucial because it affects nutrient availability to the plants. Cannabis plants generally prefer a pH range of 6.0 to 6.5 in soil and coco coir, while hydroponic systems may require slightly different pH levels. Regular pH monitoring and adjustment are essential to prevent nutrient deficiencies or toxicities.

Feeding Schedule

 – Cannabis plants require different nutrient formulations at various stages of growth (vegetative, flowering, late flowering/ripening). Ensure that you follow a feeding schedule that matches the developmental stage of your plants.
– Start with a diluted nutrient solution and gradually increase the concentration as your plants grow. Overfeeding can lead to nutrient imbalances and plant stress.

Watering Frequency 

– The frequency of feeding cannabis plants depends on several factors, including the size of the plant, environmental conditions, and the type of growing medium.
– In soil, allow the top layer to dry slightly between waterings. In hydroponic or coco coir systems, maintain a consistent moisture level, as these media retain less water.

Flush Before Harvest

– Some growers choose to flush their cannabis plants with plain, pH-balanced water in the final weeks before harvest. This helps remove excess nutrients and can enhance the flavor and aroma of the final product.

Monitor Plan Health 

– Regularly inspect your plants for signs of nutrient deficiencies or excesses. Common symptoms include yellowing leaves, leaf curling, and brown spots.
– Adjust your nutrient regimen as needed based on your observations and the specific requirements of your cannabis strain.


Feeding cannabis plants is a crucial aspect of successful cultivation. Understanding the nutrient needs of your plants, along with careful monitoring and adjustment, will help you achieve healthy, vigorous growth and maximize your cannabis yields.