Yes, you can successfully grow dwarf citronella plants in an outdoor plant box! These compact, fragrant plants are perfect for container gardening and serve as a natural mosquito repellent. Here’s what you need to know:

1. Choosing the Right Plant Box: Ensure your outdoor plant box has adequate drainage holes to prevent waterlogging. A box made of wood, plastic, or ceramic works well.

2. Soil Requirements: Use well-draining potting soil mixed with compost for optimal growth. Citronella plants thrive in slightly acidic to neutral soil.

3. Sunlight Needs: Place the plant box in a spot that receives at least 6 hours of sunlight daily. Partial shade is acceptable, but full sun encourages lush growth.

4. Watering Tips: Keep the soil consistently moist but not soggy. Water when the top inch of soil feels dry to the touch.

5. Maintenance: Trim the plant regularly to encourage bushiness and remove dead leaves. Fertilize monthly during the growing season with a balanced fertilizer.

By following these steps, your dwarf citronella plants will flourish in an outdoor plant box, adding beauty and functionality to your space. Happy gardening!