Parsley is a versatile and flavorful herb that thrives in outdoor plant boxes, especially when paired with the right companion plants. To create a thriving parsley garden, consider planting it alongside vegetables and herbs that share similar growing conditions.

1. Tomatoes: Parsley and tomatoes make excellent companions. Tomatoes provide partial shade, which helps parsley retain moisture, while parsley attracts beneficial insects that deter pests from tomatoes.

2. Chives: These hardy herbs repel aphids and other pests, protecting parsley. Their shallow roots also prevent competition for nutrients, making them ideal neighbors.

3. Lettuce: With its shallow root system, lettuce grows well alongside parsley without competing for space. Both prefer moist, well-drained soil.

4. Basil: This aromatic herb enhances parsley’s growth by deterring harmful insects and improving soil health.

5. Marigolds: Known for their pest-repellent properties, marigolds protect parsley from nematodes and other soil-borne pests.

For optimal growth, ensure your outdoor plant boxes receive at least 6 hours of sunlight daily and use well-draining soil. Regular watering and occasional fertilization will keep your parsley and its companions flourishing. By choosing the right plants, you can create a productive and visually appealing parsley garden in your outdoor plant boxes.