Yes, you can grow dwarf papaya plants in an outdoor plant box! These compact varieties are perfect for container gardening, even in limited spaces. To ensure success, choose a sunny location with at least 6-8 hours of direct sunlight daily. Use a large, sturdy plant box (at least 20 inches deep) with well-draining soil enriched with organic matter. Dwarf papayas thrive in warm climates but can tolerate mild temperature fluctuations. Water regularly to keep the soil moist but not soggy, and fertilize monthly with a balanced fertilizer. With proper care, your outdoor plant box can yield delicious, homegrown papayas in just 6-12 months!