Leaves. Arizona Yellow Bells. Tecoma stans var. angustata.	Flowers. Arizona Yellow Bells. Tecoma stans var. angustata.

Arizona Yellow Bells. Tecoma stans var. angustata, Bignonia Family: ( Bignoniaceae ) , Arizona Yellow Bells. Also Called: Yellow Bells, Yellow Trumpet Flower. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Arizona Yellow Bells is a shrub or small tree that reaches 15 - 20 feet in height. It has bright yellow bell shaped flowers up to 2 inches across. It works well for screening and large shrub borders. From Mid March through November, it's large clusters of trumpet-shaped yellow flowers attract hummingbirds. These flowers are followed by long, narrow seedpods. Tecoma stans var. angustata is in the bignonia family with about 725 mostly tropical species worldwide. Only four members occur in our region. A few well - known members include jacaranda, and trumpet vine. Tecoma stans var. angustata is said to be a native plant of West Texas Tecoma stans var. angustata, is shorter, more drought-tolerant, and more cold-tolerant than some of the other tropical varieties sold in nurseries. Quick Notes: Height: 4 - 10 feet tall, spread 3 to 8 feet. In their native environment they can reach 25 feet in height. Flowers: Trumpet shaped, on the terminal portions of the branches; Yellow - Orange to orange, up to 2 inches long & about 1 1/2 inches in diameter.. Blooming Time: Late March to November. Leaves: Leaves are pinnately compound; with linear serrate leaflets 1/2 inch wide, glossy bright green in color. Found: Native of Argentina and Bolivia. A close relative, Tecoma stans, is also native to southeastern Arizona (Epple). It is native between 3,000 to 5,500 feet. The USDA claims it is native of the USA (AZ, FL, HI, NM, TX), USA+ (PR, VI). In Arizona it is native to Gila, Graham, Pinal, Pima, Cochise, & Santa Cruz counties. Elevation: Native from 0 to 2,400 feet. In a tropical area. Hardiness: USDA Zone 7a: to -17.7 �C (0 �F) USDA Zone 7b: to -14.9 �C (5 �F) USDA Zone 8a: to -12.2 �C (10 �F) USDA Zone 8b: to -9.4 �C (15 �F) USDA Zone 9a: to -6.6 �C (20 �F) USDA Zone 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �F) USDA Zone 10b: to 1.7 �C (35 �F) USDA Zone 11: above 4.5 �C (40 �F) Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) Sun Exposure: Full Sun Habitat: Alkaline, well-drained/light soils. An ideal xeriscape landscape plant in Arizona. Miscellaneous: Flowering Photos Taken March 16, 2006. Westbrook Village, Peoria, Arizona.