There is no definitive answer to this question, as different types of nutrient products have their own advantages and disadvantages. The best type of nutrient product for cannabis plants depends on your personal preference, budget, experience level, growing medium, growing method, plant stage, plant strain, etc. Some popular types of nutrient products for cannabis plants include: Liquid fertilizers: these are easy to use and absorb, but they may also be expensive and prone to salt buildup. Dry fertilizers: these are cheap and long-lasting, but they may also be hard to dissolve and measure. Organic fertilizers: these are natural and eco-friendly, but they may also be slow-releasing and inconsistent. Chemical fertilizers: these are precise and fast-acting, but they may also be harsh and unnatural.