Creating a stunning powder garden in outdoor plant boxes requires selecting plants that thrive in dry, low-maintenance conditions. Powder gardens, often characterized by their sandy or gravelly soil, demand species that can withstand drought and minimal watering. Here are the top plant choices for your outdoor plant boxes:

1. Succulents (e.g., Echeveria, Sedum, Aloe): These hardy plants store water in their leaves, making them perfect for powder gardens. Their varied shapes and colors add visual interest.

2. Lavender: Known for its fragrant blooms and drought tolerance, lavender thrives in well-drained soil and full sun, ideal for outdoor plant boxes.

3. Agave: With its striking architectural form, agave is a low-maintenance option that requires little water and adds a bold statement to your garden.

4. Yucca: This resilient plant features sword-like leaves and thrives in dry conditions, making it a great choice for powder gardens.

5. Ornamental Grasses (e.g., Blue Fescue, Fountain Grass): These grasses add texture and movement to your garden while being highly drought-resistant.

For optimal results, ensure your plant boxes have excellent drainage and use a sandy or gravelly soil mix. Pair these plants with decorative rocks or mulch to enhance the powder garden aesthetic while reducing evaporation.

By choosing these plants, you’ll create a vibrant, low-maintenance powder garden that thrives in outdoor plant boxes with minimal effort. Happy gardening!