Bronze sculptures are renowned for their durability and resistance to biological growth, including moss and lichen. This resilience stems from bronze's natural properties and the protective patina that forms over time.

The alloy's copper content acts as a natural biocide, inhibiting the growth of moss, algae, and fungi. When exposed to outdoor elements, bronze develops a patina—a thin oxidized layer—that further shields the surface from moisture and organic colonization.

While bronze is highly resistant, environmental factors can influence biological growth:

1. Humidity: Prolonged damp conditions may encourage minor moss formation in textured areas

2. Shade: Sculptures in constant shade develop patina slower and may see more biological activity

3. Surface texture: Rough surfaces provide more footholds for organic growth than polished ones

Maintenance tips to preserve bronze's resistance:

- Regular cleaning with mild soap and water

- Occasional waxing for added protection

- Ensuring proper drainage around outdoor installations

- Professional restoration if patina becomes compromised

Modern bronze alloys and protective coatings have enhanced this natural resistance, making contemporary sculptures even more resilient against biological growth while maintaining their artistic integrity. The combination of material science and artistic craftsmanship ensures bronze remains a premier choice for outdoor art installations worldwide.