in Tucson, Phoenix,
Arizona and California

Gardening in Tucson, Phoenix, Arizona and California

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Bignonia callistegioides: Lavender Trumpet Vine / Violet Trumpet Vine

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Form: Woody climbing vine.
Lifespan: Perennial.
Leaf retention: Evergreen but deciduous below 20°F.
Growth rate: Moderate to fast.
Mature Size: 15-25' long.
Flowers: Large, trumpet-shaped, purple lobes with white tubes, inside throat veined purple and white, fragrant.
Bloom: Mid-winter into spring, summer and sometimes fall.
Fruit: Large prickly seed pods.
Leaves: Green, paired leaflets, lance-shaped, glossy, smooth edges.
Stems: No thorns, climbs with tendrils, needs support.
Roots: Forms underground tubers. Invasive in moist, fertile soils.
Wildlife: Attracts hummingbirds, butterflies, bees.
Toxic / Danger: Seed is poisonous if ingested.
Origin: Argentina and southern Brazil.

Cultivation and Uses
USDA hardiness zones: 8b-11. Can die back in very low temperatures but will recover from roots. Root hardiness 10-15°F.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to part shade.
Water after becoming established: Monthly, or more often to maintain appearance. Extra water speeds growth.
Soil: Well drained, tolerant, pH 5.5-7.5 (acidic to neutral). Low salt tolerance. Fertilizing and organic soil amendments cause rampant growth and should be minimized.
Mulch: To retain moisture and keep roots cool and shaded.
First Year Care: Water frequently to establish an extensive root system.
Planting: Can be grown in containers.
Prune: Late fall to early winter to keep in bounds. Deadheading flowers produces more blooms.
Litter: Low.
Propagation: Stem cuttings, tip layering. Seed has long germination period and needs scarification.
Uses: Ornamental, privacy screen on trellis, cover for fence or wall.

A member of the Bignonia family and related to Bignonia capreolata: Crossvine. Former botanical name: Clytostoma callistegioides. Other common names are Argentine Trumpet and Painted Trumpet. This moderately vigorous plant covers a large area.

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Bignonia callistegioides: Lavender Trumpet Vine - flower