Creating a vibrant hierba luisa (lemon verbena) garden in outdoor plant boxes requires thoughtful companion planting. Hierba luisa thrives in well-drained soil and full sun, making it ideal for container gardening. Here are the best plants to pair with it for a lush, aromatic display:

1. Lavender – Both hierba luisa and lavender love sunny spots and well-drained soil. Their fragrant leaves complement each other beautifully.

2. Rosemary – This hardy herb shares similar growing conditions and adds structure to your plant box.

3. Mint – A fast-growing herb that thrives in containers, but plant it separately to prevent overcrowding.

4. Marigolds – These colorful flowers deter pests while adding visual appeal.

5. Thyme – A low-growing herb that fills gaps and enhances the garden’s fragrance.

For optimal growth, ensure your plant boxes have drainage holes and use a light, nutrient-rich potting mix. Water hierba luisa moderately, allowing the soil to dry slightly between watering. With these companion plants, your hierba luisa garden will flourish in outdoor plant boxes, offering both beauty and utility.