How to prevent water stagnation in marble outdoor tree boxes with poor drainage?

Water stagnation in marble outdoor tree boxes can lead to root rot, mold growth, and structural damage. To prevent this, follow these practical steps:

1. Improve Drainage Holes: Ensure the tree box has adequate drainage holes. If not, drill additional holes at the bottom to allow excess water to escape.

2. Use a Gravel Layer: Place a layer of gravel or small stones at the bottom of the box before adding soil. This helps water flow freely and prevents clogging.

3. Elevate the Tree Box: Place the marble box on bricks or feet to elevate it slightly, allowing better airflow and drainage underneath.

4. Choose Well-Draining Soil: Opt for a soil mix designed for good drainage, such as sandy or loamy soil, to reduce water retention.

5. Regular Maintenance: Check and clear drainage holes periodically to prevent blockages from debris or soil compaction.

By implementing these solutions, you can protect your marble tree boxes and ensure healthy plant growth.