Arranging antique plants in an outdoor plant box can transform your garden into a charming vintage oasis. To achieve the perfect look, start by selecting plants with timeless appeal, such as ferns, ivy, or heirloom roses. Consider the height and texture of each plant to create visual balance—place taller plants at the back and cascading varieties near the edges. Use weathered or distressed plant boxes to enhance the antique aesthetic. Group plants with similar sunlight and water needs to ensure they thrive. Finally, add rustic accents like moss or aged pottery to complete the vintage vibe. With these tips, your outdoor plant box will become a captivating focal point in your garden.