Creating a smoothie garden in outdoor plant boxes is a fantastic way to grow fresh, nutrient-rich ingredients for your daily blends. Here are some of the best plants to include:

1. Spinach: Packed with iron and vitamins, spinach is a smoothie staple that grows easily in plant boxes.

2. Kale: A hardy green rich in antioxidants, kale thrives in outdoor containers and adds a robust flavor.

3. Strawberries: These sweet berries are perfect for smoothies and grow well in sunny plant boxes.

4. Mint: Adds a refreshing twist to smoothies and spreads quickly, making it ideal for confined spaces.

5. Chard: Colorful and nutritious, chard is a versatile green that’s easy to cultivate.

For optimal growth, ensure your plant boxes receive at least 6 hours of sunlight daily and use well-draining soil. Regularly harvest leaves to encourage new growth and enjoy fresh, homegrown smoothies year-round!