How to prevent algae growth on shaded concrete outdoor ottomans?

Algae growth on shaded concrete outdoor ottomans is a common issue due to moisture and lack of sunlight. To prevent it, follow these steps:

1. Regular Cleaning: Scrub the surface with a mixture of water and mild detergent weekly to remove dirt and organic matter that algae feed on.

2. Use Vinegar or Bleach Solution: Apply a solution of white vinegar or diluted bleach (1:10 ratio with water) to kill existing algae. Rinse thoroughly afterward.

3. Improve Drainage: Ensure water doesn’t pool around the ottomans by adjusting their placement or adding drainage holes.

4. Apply Algae-Resistant Sealant: Coat the concrete with a sealant designed to inhibit algae growth, reapplying as recommended.

5. Increase Sunlight Exposure: Trim nearby foliage to allow more sunlight, which naturally discourages algae.

For persistent algae, consider pressure washing or commercial algae removers. Consistent maintenance is key to keeping your outdoor ottomans algae-free.