How to prevent root rot in cast iron outdoor planters with poor drainage?

Root rot is a common issue in cast iron outdoor planters, especially when drainage is poor. Here are practical steps to prevent it:

1. Improve Drainage: Drill additional holes in the planter base or elevate it slightly to allow excess water to escape.

2. Use Well-Draining Soil: Opt for a mix with perlite, sand, or gravel to enhance water flow.

3. Add a Drainage Layer: Place pebbles or broken pottery at the bottom to prevent soil from clogging drainage holes.

4. Water Wisely: Avoid overwatering—check soil moisture before watering and ensure the top layer dries out between sessions.

5. Choose Resilient Plants: Select species tolerant of occasional wet conditions, like ferns or hostas.

By following these tips, you can maintain healthy plants and extend the life of your cast iron planters.