Growing a small halesia (also known as silverbell tree) in an outdoor plant box is possible, but it requires careful planning and proper care. Halesia trees thrive in well-draining, slightly acidic soil and prefer partial to full sunlight. When planting in a container, choose a large, sturdy plant box to accommodate the tree's root system and ensure adequate drainage.

Regular watering is essential, as container plants dry out faster than those in the ground. Fertilize lightly during the growing season to support healthy growth. Prune as needed to maintain shape and encourage airflow. While halesia can adapt to container life, it may eventually outgrow the box, requiring transplanting to a larger space. With the right conditions, your halesia can flourish in an outdoor plant box, adding beauty to patios or small gardens.