Mimi Hardy Hibiscus – Dark glowing red full Hibiscus flowers are held against the deep burgundy foliage of this exceptionally beautiful hardy and compact Hibiscus. Growing perennial Hibiscus that grows to about 3 feet all and 4 feet wide. These plants love the heat and sun of summer when you provide a full to mostly sunny site in fertile wet to moist soils. You can grow the hardy Hibiscus in average moist soils especially with a deep mulch but they still may need periodic watering during dry spells. Hardy in zones 5a-10b.