True Indigo (Indigofera Tinctoria) - 50 Seeds Other Common Names: Dye Indigo Color: Pink to purple flowers (indigo dye is made from the leaves) Planting Instructions: Sow Seeds: Outdoors after the last frost, or indoors a few weeks before the last frost. Plant Details: Height: 24 - 36 inches Spacing: 24 - 36 inches Bloom Time: Spring - Summer Hardiness Zone: 5 - 12 Light Requirements: Full sun Soil Water Preferences: Average; drought tolerant Quantity: 50 Seeds Other Information: True Indigo, also known as Dye Indigo, is a historically significant plant used for producing indigo dye from its leaves. It adds beauty to gardens with its pink to purple blooms and is hardy in a wide range of climates, tolerating drought conditions.