Scientific: Clytostoma callistegioides (also known as Bignonia callistegioides)
Common: violet trumpet vine
Family: Bignoniaceae
Origin: Brazil and Argentina

Hardiness zones
Sunset
9, 12-24
USDA 9-11

Landscape Use: Trellis, arbor, pergola, wall cover, sprawling ground cover. Best used in mesic landscape design themes.

Form & Character: Lush when in leaf and festive when in bloom, subtropical to tropical in appearance

Growth Habit: Mostly evergreen, vigorous vine to 20 ft. 

Foliage/texture: Bi-foliate leaf with tendril; medium texture

Flowers & fruits: Large, tubular, lilac blue flowers, white to yellowish throat with prominent floral  violet veins; fruit a brown capsule producing winged seeds.

Seasonal color: Cool violet-blue flowers mostly in spring and summer

Temperature: Heat loving and moderately cold tolerant to 20o to 25oF.

Light: Full sun to partial shade

Soil: Tolerant

Watering: Irrigate regularly in Phoenix

Pruning: May need pruning to control spread

Propagation: Semi-hardwood cuttings in summer root easily

Disease and pests: None

Additional comments: Rarely found in Phoenix, though surprisingly well adapted to the lower desert if given ample water.