Growing a small carpenteria (Carpenteria californica) in an outdoor plant box is entirely possible with the right conditions. This evergreen shrub, native to California, thrives in well-draining soil and partial to full sunlight. When planting in a container, ensure the box is large enough to accommodate its root system—ideally at least 18 inches deep and wide. Use a high-quality potting mix with good drainage to prevent waterlogging, as carpenteria dislikes soggy roots.

Water the plant regularly but allow the soil to dry slightly between waterings. Fertilize lightly in spring with a balanced, slow-release fertilizer to encourage healthy growth and abundant blooms. Prune after flowering to maintain shape and remove dead wood.

While carpenteria is drought-tolerant once established, container-grown plants may need more frequent watering, especially in hot climates. Protect it from harsh winter winds if you live in a cooler region. With proper care, your carpenteria can flourish in an outdoor plant box, adding beauty and fragrance to your patio or garden.