Achlys triphylla – Vanilla Leaf Achlys triphylla – Vanilla Leaf September 25, 2015 Bosky Description: perennial (1 ft.) with a single three-bladed leaf per stem. Dainty white flower spikes appear in spring. Vanilla leaf spreads by rhizomes, and can form a lush groundcover. Winter deciduous. Shade, regular water, rich soil. 0