Indoor cannabis cultivation requires careful attention to nutrition and fertilization in order to achieve optimal growth and yields. Here are some key points to keep in mind when selecting and applying nutrients and fertilizers to your indoor cannabis plants:
- Know the macronutrients: The three primary macronutrients that cannabis plants need are nitrogen (N), phosphorus (P), and potassium (K). They are typically listed as the first three numbers on a fertilizer label.
- Micronutrients matter too: In addition to macronutrients, cannabis plants also require micronutrients such as calcium, magnesium, iron, and zinc. Some micronutrient deficiencies can cause significant problems, so it’s important to make sure your plants are getting enough of these.
- Choose a high-quality nutrient system: There are many options for cannabis nutrient systems, but it’s important to choose one that is formulated specifically for cannabis and contains all the nutrients your plants need.
- Monitor pH levels: pH levels play a crucial role in nutrient uptake by the plant. The ideal pH range for hydroponic systems is 5.5-6.5, while soil-grown plants prefer a slightly higher pH range of 6-7.
- Adjust nutrient levels as needed: As your plants grow and develop, their nutrient needs will change. Be prepared to adjust the levels of nutrients you’re providing accordingly.
- Flush before harvest: Flushing your plants with plain water before harvest will help to remove any excess nutrients and salts, which can affect the taste and potency of your buds.