Creating a mini dune ecosystem in an outdoor plant box is a unique way to bring the beauty of coastal or desert landscapes to your garden. Follow these steps to build your own thriving sandy habitat:

1. Choose the Right Container: Select a wide, shallow plant box with drainage holes to mimic natural dune conditions.

2. Prepare the Soil Mix: Use a blend of coarse sand (70%) and well-draining potting soil (30%) to replicate dune soil. Avoid compacting the mixture.

3. Select Dune-Friendly Plants: Opt for drought-resistant species like beach grass, sea oats, sedum, or small succulents that thrive in sandy environments.

4. Plant Strategically: Arrange taller plants at the back and ground covers like ice plants in front. Leave space between plants to prevent overcrowding.

5. Water Wisely: Water deeply but infrequently, allowing the soil to dry completely between watering sessions.

6. Add Decorative Elements: Incorporate small rocks, driftwood, or seashells to enhance the natural dune aesthetic.

7. Provide Adequate Sunlight: Place your plant box in full sun (6+ hours daily) for optimal growth.

8. Maintain Sparingly: Remove weeds promptly and trim plants as needed. Avoid fertilizing too often as dune plants prefer nutrient-poor conditions.

This low-maintenance ecosystem will attract pollinators while requiring minimal care, making it perfect for busy gardeners or arid climates.