Growing a small nectarine tree in an outdoor plant box is entirely possible, provided you follow a few key guidelines. Nectarine trees thrive in well-draining soil and require ample sunlight, making a spacious plant box an ideal choice for urban or limited-space gardens.

When selecting a plant box, opt for one that is at least 18-24 inches deep and wide to accommodate the tree's root system. Ensure the box has drainage holes to prevent waterlogging, which can harm the tree. Use a high-quality potting mix enriched with organic matter to promote healthy growth.

Regular watering is crucial, especially during dry spells, but avoid overwatering. Fertilize the tree with a balanced fertilizer during the growing season to support fruit production. Prune annually to maintain shape and encourage airflow.

With proper care, your small nectarine tree can flourish in an outdoor plant box, yielding delicious fruit even in compact spaces. Happy gardening!