Ruellia brittoniana is a perennial plant in South Florida forming a dense clump attaining a height of 3-4′. A lot of gardeners shy away from this plant due to its invasive nature. However, I submit that some invasive plants can be a positive and this is one of those. It is an excellent nectar source for skipper butterflies and blooms profusely year-round. It forms dense clumps and would make an excellent background plant in any butterfly garden. Most people are familiar with the purple flowering variety which is very common. However, there is a white flowering variety which contrasts nicely with the purple flowers when grown together.
Richard Lyons Nursery currently has both varieties in stock.