These are the top 2 Orchid Blue Flower names given here:
1. Disa Graminifolia: The scientific name of this flower is Herschelian graminifolia. It requires bright indirect sunlight to grow and hardy zones are 9-11.
2. Blue Lady Orchid: The scientific name of this flower is Thelymitra crinite. It requires full indirect sunlight to grow and hardy zones are 9-11.