If you're looking to improve air quality while adding greenery to your outdoor space, choosing the right plants for your plant boxes is key. Certain plants are renowned for their ability to filter toxins and release fresh oxygen, making them perfect for outdoor settings. Here are some of the best air-purifying plants for outdoor plant boxes:

1. Spider Plant (Chlorophytum comosum) – Known for its resilience and ability to remove formaldehyde and xylene from the air. It thrives in partial shade and requires minimal care.

2. Snake Plant (Sansevieria trifasciata) – A hardy plant that filters out benzene, formaldehyde, and other toxins. It’s drought-tolerant and grows well in both sun and shade.

3. Lavender (Lavandula) – Not only does lavender purify the air, but its soothing fragrance also repels insects. It prefers full sun and well-drained soil.

4. English Ivy (Hedera helix) – Effective at reducing airborne mold and pollutants. It grows well in shaded areas and is ideal for hanging plant boxes.

5. Bamboo Palm (Chamaedorea seifrizii) – A tropical plant that removes formaldehyde and adds a lush, tropical feel to outdoor spaces.

For best results, combine these plants in your outdoor plant boxes to maximize air purification and aesthetic appeal. Regular watering and proper sunlight will ensure they thrive while keeping your air clean and fresh.