What are the porosity differences between cast iron and wrought iron outdoor flower boxes?

When selecting outdoor flower boxes, understanding the porosity differences between cast iron and wrought iron is crucial for durability and plant health. Cast iron, known for its dense structure, has low porosity, making it resistant to moisture absorption but prone to rust if untreated. Wrought iron, with a slightly higher porosity due to its fibrous grain structure, allows minimal moisture penetration but requires regular maintenance to prevent corrosion.

Cast iron flower boxes are ideal for humid climates due to their impermeability, while wrought iron offers better breathability, suitable for well-drained soils. Both materials benefit from protective coatings to enhance longevity. Choose based on your climate and maintenance preferences to ensure your garden decor remains stylish and functional for years.