- You will get 50+ Seeds of Blue Wild False Indigo Flower Seeds. - Seller Notes “Baptisia australis. U.S. Grown seed. Tested 1/23 - Germination 94%. Packed 1/23.”. - Planting Time: Perennial. - Soil Type: Poor soils, Clay, Loam, Peat, Sand. - Life Cycle: Perennial. - USDA Hardiness Zone (°F): 6 (-10 to 0 °F). - Soil pH: Neutral. - Watering: Light. - Sunlight: Partial Shade, Full Sun. - Blue Wild Indigo. Blue false indigo is a American Native Wildflower. In fact, Europeans used to pay Americans to grow this plant, for the dye they made from the blue flowers. That's why it's called False Indigo. True Indigo was rare and expensive, but Baptisia is easy to grow and was cheap. False indigo is a member of the legume family and is Nitrogen-Fixing. You’ll notice a resemblance to peas in its foliage and flowers, as well as its fondness for cooler weather. This is a long living perennial 10 years plus.50+ Quality seeds per order. Thank You! - Baptisia australis. - Perennial. - Spring, soil Temp 68F+. - SOW 1/4' deep, 2 or 3 seeds per plant, 30"apart. Keep moist. - Germination 14-21 days. - Medium water. Light fertilizer. - Flowers are indigo blue. Blooms from late spring through late summer.