Indigo is derived from the leaves of several plant species within the Indigofera genus, with a particular emphasis on Indigofera tinctoria. These specific Indigofera plants, which hold the secret to creating this vibrant dye, are typically grown in tropical climates, where they thrive and provide a sustainable source of color. 

When it comes to its applications, indigo is a favored choice for dyeing textiles, with its rich blue hues making it a popular and enduring option for artists and artisans in the world of fabric dyeing. Its traditional use has deep historical roots, and in the modern age, it is also valued for its eco-friendly and biodegradable properties, appealing to those who seek sustainable and environmentally conscious textile dyeing methods.