Ruellia brevifolia or the Tropical Wild Petunia is a small, shrubby perennial with narrow green leaves that produces attractive, bright red, tubular shaped flowers on slender stalks over the warmer months of the year.
This plant likes to have plenty of light but not too much direct or scorching sun, being well suited to the dappled light under tree canopies.
They can withstand some dry periods but regular watering is preferred.