This vigorous climbing vine covers walls and trellises and makes a full hanging basket in one season. Its bright red-orange flowers bloom in profusion the entire summer. The dark brown center attractively contrasts with its rich orange petal color creating a show-stopping effect. With full sun and plenty of water, Thunbergia Red-Orange is easily a three-season bloomer. Grow as a tropical annual in your summer garden and limit the amount of fertilizer to ensure continuous blooms.