Photolithoheterotrophic growth, such as algae and mold, can quickly degrade the appearance and durability of outdoor seating. To combat this, regular cleaning is essential. Use a mixture of water and mild detergent or a specialized outdoor cleaner to scrub surfaces thoroughly. For stubborn growth, a solution of white vinegar or hydrogen peroxide can be effective.

Applying protective coatings, such as sealants or UV-resistant sprays, creates a barrier against moisture and sunlight, which are primary contributors to photolithoheterotrophic growth. Additionally, choosing materials like treated wood, metal, or synthetic wicker can naturally resist such issues.

Proper storage during harsh weather or covering furniture with breathable, waterproof covers can further prevent unwanted growth. Ensuring good airflow around seating areas by spacing furniture appropriately also reduces humidity buildup.

By combining these methods, you can maintain clean, attractive outdoor seating free from photolithoheterotrophic growth for years to come.