Yes, you can grow dwarf persimmon trees in an outdoor plant box! These compact fruit trees are ideal for small spaces and container gardening. Here’s what you need to know to ensure success:

1. Choose the Right Variety: Opt for dwarf or semi-dwarf persimmon varieties like 'Fuyu' or 'Izu,' which are well-suited for containers.

2. Select a Spacious Plant Box: Ensure the box is at least 18-24 inches deep and wide to accommodate root growth.

3. Use Well-Draining Soil: Persimmons thrive in loamy, slightly acidic soil with good drainage to prevent root rot.

4. Provide Full Sunlight: Place the plant box in a spot that receives 6-8 hours of direct sunlight daily.

5. Water and Fertilize Regularly: Keep the soil consistently moist but not waterlogged, and use a balanced fertilizer during the growing season.

With proper care, your dwarf persimmon tree can flourish in an outdoor plant box, yielding sweet, delicious fruit even in limited spaces. Happy gardening!