The red flowers of the Red Azalea Shrub Plants appear overnight on a bush and completely cover the plant. The Red Formosa Flowering Azalea Shrub Plant brightens any garden landscape, beginning in early March. Large flowers glow like large red jewels on the Red Flowering Azalea bush. Brighten the front any home or office with a sheared Red Formosa Flowering shrub. The bright red flower of the Red Formosa Azalea Shrub bush is easy to look at after a cold Winter.