Vermiculite

If you have plants that struggle when their soil dries out too quickly, vermiculite is the ultimate solution. This natural, heat-expanded mineral acts like millions of micro-sponges capable of absorbing up to five times its weight in water and nutrients, gradually releasing them to the roots exactly when the plant needs them. Unlike perlite (which is primarily used for drainage), vermiculite is designed to maintain constant, stable moisture without waterlogging, making it the star ingredient for starting seeds, rooting delicate cuttings, and creating the perfect mixes for thirsty Alocasias, Calatheas, and other tropicals. Furthermore, its flaky structure provides excellent thermal insulation, protecting sensitive root systems from sudden temperature fluctuations.