Creating a mini chocolate garden in an outdoor plant box is a delightful way to combine gardening with a touch of sweetness. Start by selecting a sturdy plant box with proper drainage. Fill it with nutrient-rich soil, ideal for chocolate-scented plants like chocolate cosmos, chocolate mint, or cocoa plants. Arrange the plants strategically, ensuring each has enough space to grow. Water regularly and place the box in a spot with partial sunlight. Add decorative elements like small pebbles or miniature signs for a whimsical touch. With care, your mini chocolate garden will thrive, offering fragrant blooms and a unique outdoor feature.