Substrate fertilizer or root tablets are products used in gardening and horticulture to provide nutrients directly to the roots of plants. These tablets typically consist of a concentrated mix of essential nutrients and sometimes beneficial microorganisms that promote healthy root development and overall plant growth. Here's some basic information about substrate fertilizers/root tablets:

Composition Substrate fertilizers/root tablets contain a blend of essential nutrients such as nitrogen (N), phosphorus (P), potassium (K), as well as micronutrients like iron, manganese, zinc, and others. The exact composition may vary depending on the specific needs of different types of plants