Large Yellow Lady's Slipper— Cypripedium pubescens – Bloom Time: Spring.  These plants are easily grown in partial to full shade in sandy well drained soil and moderate moisture. Shipped as bare roots dormant crowns. Seed grown,  flowering size.  Hardiness Zone 3 – 8. In zones 7-8  Spring ONLY and in zones 4-5  either Fall or Spring. VERY LIMITED!