It is not a trumpet vine although it looks like one. It is Cross Vine
Cross Vine (Bignonia capreolata L.)
Identification: A vine. Flowers large, red-orange, trumpet-shaped with 5 spreading petals at the apex of the tube. Throat of flower usually shaded with yellow. Stem woody, a vine, showing a cross when sectioned. Leaves consisting of 2 large, paired, oval leaflets.
Distribution: A southern species found from Maryland, Illinois, and Missouri southward to Florida and Texas.
Habitat: Cross Vine is found in bottomland forest.
Flowering period: April to June.
Similar Species: Cross Vine is similar to Trumpet Creeper. However the leaves are in 2 large, paired, oval leaflets in contrast to the compound leaves of Trumpet Creeper. The flowering period of Cross Vine is generally earlier than that of Trumpet Creeper (July to September.)
I have to varities the Picture is of "Tangerine Beauty" here is a link to a source
http://www.monrovia.com/PlantInf.nsf/0/8d425db8732a8be98825684d0070a209?OpenDocument
the other is just a native one although it cost me more than "Tangerine Beauty"
I do have it interplanted with a Trumpetcreeper or Trumpet Vine for color later in the season.
Mal