Watering a plant growing in Leca (Lightweight Expanded Clay Aggregate) is straightforward. The primary method involves using a water reservoir at the bottom of the pot.
Simply keep the water reservoir topped up at the bottom, ensuring the water level remains below root level. This allows the Leca pebbles to wick moisture upwards to the plant's roots as needed. Leca is designed to absorb about 30% of its weight in water, with the rest draining away into the reservoir. This capillary action provides consistent moisture without waterlogging the roots.
This system effectively prevents overwatering because the plant controls its water intake. Your main task is to periodically check the reservoir level and add water when it gets low.
Simple Steps for Watering Leca Plants
- Ensure your pot has a water reservoir area at the bottom.
- Add water to the reservoir.
- Always keep the water level below the bottom of the roots.
- Allow the Leca to absorb water and wick it up to the plant.
- Check the reservoir regularly (how often depends on plant size, environment, etc.) and simply top up the water reservoir when needed.
By maintaining the reservoir below root level, you mimic a natural process where roots seek moisture, and the LECA acts as a consistent conduit. Done correctly, this method simplifies watering and makes over-watering virtually impossible.
