Arranging heirloom plants in an outdoor plant box requires careful planning to ensure both aesthetic appeal and healthy growth. Here are some expert tips to help you create the perfect setup:

1. Consider Plant Height: Place taller heirloom varieties like tomatoes or pole beans at the back of the box, with shorter plants like herbs or lettuce in the front. This ensures all plants receive adequate sunlight.

2. Spacing Matters: Overcrowding can lead to poor air circulation and disease. Follow seed packet recommendations for spacing, or leave at least 6-12 inches between plants depending on their mature size.

3. Companion Planting: Pair compatible heirloom plants to maximize growth. For example, basil thrives near tomatoes, while marigolds deter pests when planted with vegetables.

4. Soil and Drainage: Use high-quality, well-draining soil to prevent waterlogging. Heirloom plants often have specific soil needs, so research each variety beforehand.

5. Rotate Crops: If reusing the plant box, rotate heirloom varieties each season to prevent soil depletion and reduce pest buildup.

By following these guidelines, your outdoor plant box will not only look stunning but also yield a bountiful harvest of heirloom produce. Happy gardening!