Creating a line garden in outdoor plant boxes is a fantastic way to add structure and beauty to your space. Whether you're aiming for a modern, minimalist look or a lush, vibrant display, choosing the right plants is key. Here are some of the best plants for line gardens in outdoor plant boxes:

1. Boxwood (Buxus sempervirens) – A classic choice for structured line gardens, boxwood is evergreen and easy to shape. It thrives in plant boxes and adds a timeless elegance.

2. Lavender (Lavandula) – Perfect for adding fragrance and color, lavender is drought-tolerant and ideal for sunny spots. Its vertical growth fits well in line gardens.

3. Ornamental Grasses (e.g., Festuca glauca) – These add texture and movement, requiring minimal care. They’re great for creating a soft, flowing line.

4. Sedum (Stonecrop) – A low-maintenance succulent, sedum is perfect for sunny plant boxes. Its compact growth and variety of colors make it a versatile choice.

5. Dwarf Conifers (e.g., Juniperus squamata) – These provide year-round interest with their unique shapes and colors, ideal for structured line gardens.

For a cohesive look, mix plants with similar light and water needs. Line gardens in plant boxes are not only visually appealing but also practical for small spaces or urban settings. With the right plants, you can create a stunning, low-maintenance garden that thrives all year.