Creating a lush rooftop fern garden requires careful selection of outdoor furniture that complements the greenery while withstanding the elements. The best furniture for this setting should be weather-resistant, lightweight, and space-efficient.

1. Teak or Acacia Wood Furniture: These hardwoods are naturally durable and resistant to moisture, making them ideal for rooftop gardens. Their warm tones blend beautifully with ferns and other greenery.

2. Aluminum or Wicker Sets: Lightweight and rust-proof, aluminum or synthetic wicker furniture is perfect for rooftops. Opt for modular designs to maximize space flexibility.

3. Foldable or Stackable Chairs: Space-saving options like foldable chairs or stackable stools are practical for smaller rooftop areas, allowing easy storage when not in use.

4. Hanging or Wall-Mounted Seating: For a unique touch, consider hanging chairs or wall-mounted benches. These add vertical interest without cluttering the floor space.

5. UV-Resistant Cushions: If you choose cushioned furniture, ensure the fabrics are UV-resistant and quick-drying to withstand sun and rain.

Pair your furniture with shade solutions like pergolas or umbrellas to protect both your ferns and seating area. With the right choices, your rooftop fern garden can become a serene urban retreat.