Renowned for their large, long-lasting, show-stopping blooms in a rainbow of rare and vibrant colors, vanda orchids are definitely in a class by themselves.  So much so that their blossoms are used to create the famous Hawaiian leis, an enchanting symbol of welcome, love and "aloha" spirit around the world.  Under the right conditions, the vanda orchid has the potential to bloom all year round, up to four times per year.  Plus, each blooming period lasts a long time with flowers lasting up to a month or even longer.  In order to produce vanda'a beautiful blooms, however, vandas have some very exacting requirements, one of which is copious amounts of…