Plagron Mega WormThis worm is very good at keeping potting soil aerated. Cultivated in a controlled manner and in a soil with sufficient nutrients, the earthworm produces a fertile, organic growing medium that strongly favors plant growth. Plagron's natural worm humus has a very high content of organic matter and offers your plants a large amount of trace elements, enzymes and minerals It guarantees an optimal ratio between nitrogen (N), phosphorus (P) and potassium