Do cast iron outdoor flower pots require a protective layer against mold?
Cast iron outdoor flower pots are durable and stylish but may be prone to mold and rust over time. While cast iron is naturally resistant to decay, moisture exposure can lead to surface mold or rust formation. Applying a protective layer, such as a waterproof sealant or rust-resistant paint, can help prolong their lifespan. Regular cleaning and ensuring proper drainage also minimize mold risks. If left untreated, mold may not damage the pot structurally but can affect aesthetics. For long-term use in humid climates, a protective coating is recommended. Choose non-toxic sealants if using pots for edible plants. Proper care ensures cast iron planters remain both functional and visually appealing for years.
