Arranging foliage plants in an outdoor plant box can transform your garden into a lush, vibrant space. Start by selecting a mix of plants with varying heights, textures, and colors to create visual interest. Taller plants like ferns or ornamental grasses work well as backdrops, while medium-sized plants such as hostas or heucheras fill the middle layer. Low-growing plants like creeping thyme or ivy can spill over the edges for a soft, natural look.

Consider the light requirements of each plant and group those with similar needs together. For a cohesive design, repeat a few key plants throughout the box to tie the arrangement together. Don’t forget to leave enough space for growth and ensure proper drainage to keep your plants healthy. With thoughtful placement, your outdoor plant box will become a stunning focal point in your garden.