How do marble outdoor planters react to acidic rainwater in industrial areas?

Marble outdoor planters are prized for their elegance and durability, but they can be vulnerable to acidic rainwater, especially in industrial areas. Acid rain, caused by pollutants like sulfur dioxide and nitrogen oxides, reacts with the calcium carbonate in marble, leading to erosion, pitting, and discoloration over time. This chemical reaction weakens the structure of the planter, making it more prone to cracks and surface degradation. To mitigate damage, consider sealing marble planters with a protective coating, placing them in sheltered areas, or opting for alternative materials in highly polluted regions. Regular cleaning with pH-neutral solutions can also help preserve their appearance. Understanding these effects ensures your garden decor remains beautiful and long-lasting despite environmental challenges.