Bronze sculptures are renowned for their durability and timeless beauty, but how do they fare against biological growth such as moss or lichen? Unlike porous materials like stone or wood, bronze’s dense, non-porous surface makes it inherently resistant to organic colonization. The natural patina that forms on bronze—a result of oxidation—acts as a protective layer, further inhibiting the growth of moss, lichen, and algae.

However, in damp or shaded environments, bronze sculptures may still develop minor biological growth over time. Regular maintenance, such as gentle cleaning with a soft brush and mild soap, can prevent buildup. For long-term protection, applying a wax coating or specialized sealant can enhance resistance.

Interestingly, some artists embrace the subtle green hues of patina, which can blend harmoniously with natural surroundings without compromising structural integrity. Ultimately, bronze’s resilience and low-maintenance nature make it an excellent choice for outdoor art, standing strong against both time and nature’s encroachment.