LECA stands for Lightweight Expanded Clay Aggregate, which is a collection of baked clay pebbles that expand when soaked in water. LECA is a growing medium that can be used in place of soil for houseplants and is commonly used in hydroponic gardening. It provides space for oxygen to flow through to the plants roots and slowly diffuses water into the roots of a plant, providing the perfect balance of hydration. LECA is great at regulating moisture, which helps to consistently water plants without overwatering them. It is also resistant to pests and diseases, making it an ideal growing medium, mulch, and drainage device for plants. However, not every plant will thrive in LECA, and gardeners have varied experiences with different plants. It is important to monitor and tailor each plants individual watering and fertilizing needs when changing over to a LECA growing system.