Trouble-free and beautiful, Japanese toad lily (Tricyrtis hirta) opens exquisite orchid-like blooms in late summer through early fall. Flowers measure 1 inch across and feature a white or lavender background with deep purple dots. On mature plants, stems are literally covered with blossoms. Toad lily spreads easily to form a colony. Site it in a shady spot (part to full shade) with moist soil. Plants grow 24 to 36 inches tall and 18 to 24 inches wide. Hardy in Zones 4-8.