Bletilla striata Hardy Orchid Description This ground orchid is easy to grow. Arching stems of purple-pink flowers emerge in late spring. Cool woodlands or shady rock gardens are the best for growing this plant. A little extra mulch around the base will help protect from late spring frosts. Sizes & Prices All Hardy Orchid Characteristics Hardiness Zone: 5-9 Light requirements: Part Sun Height: 8-12" Native: No Sizes & Prices Size: 2 Yr $14.98 Other Information Hardy Orchid Bletilla striata Zone: 5-9 Part Sun HT: 8-12"