When selecting wood for outdoor plant boxes, durability and resistance to weather are critical factors. Here are the top choices for long-lasting outdoor planters:

1. Cedar: Naturally resistant to rot, insects, and moisture, cedar is a popular choice for outdoor plant boxes. Its lightweight yet sturdy nature makes it ideal for DIY projects.

2. Teak: Known for its exceptional durability, teak contains natural oils that repel water and pests. Though more expensive, it’s a premium option for high-end outdoor planters.

3. Redwood: Similar to cedar, redwood is naturally resistant to decay and insects. Its rich color and strength make it a favorite for garden boxes.

4. Pressure-Treated Pine: Affordable and treated to resist rot and insects, pressure-treated pine is a practical choice for budget-friendly projects.

5. Cypress: With natural rot-resistant properties, cypress is another excellent option, though less common than cedar or redwood.

For maximum longevity, apply a sealant or stain to protect the wood from UV rays and moisture. Choose the right type based on your climate and budget to ensure your outdoor plant boxes thrive for years.