Do cast iron outdoor flower pots require internal liners to prevent soil contact?
Cast iron outdoor flower pots are durable and stylish, but their susceptibility to rust raises questions about soil contact. While cast iron is sturdy, prolonged exposure to moisture and soil can accelerate rusting. Using an internal liner, such as plastic or coco coir, helps prevent direct soil contact, extending the pot's lifespan. Liners also improve drainage and make repotting easier. However, if the pot is properly sealed or coated, a liner may not be necessary. For long-term use, combining a liner with regular maintenance is the best approach to keep your cast iron planters in top condition.
