Yes, you can absolutely use an outdoor plant box to grow plants for natural leather dyes! This eco-friendly approach allows you to cultivate dye plants in a compact space, making it perfect for urban gardeners or anyone interested in sustainable crafting.

Popular plants for natural leather dyes include:

- Madder Root: Produces vibrant reds and oranges.

- Indigo: Famous for its deep blue hues.

- Walnut Hulls: Yields rich browns.

- Weld: Creates bright yellows.

To get started, choose a sunny spot for your plant box and ensure well-draining soil. Regular watering and organic fertilizers will help your dye plants thrive. Once harvested, these plants can be processed into dyes by boiling or fermenting, offering a chemical-free alternative to synthetic leather dyes.

Using an outdoor plant box for dye plants is not only practical but also a rewarding way to connect with nature and create unique, sustainable leather products. Happy gardening and dyeing!