Gardening
in Tucson, Phoenix,
Arizona and California

Gardening in Tucson, Phoenix, Arizona and California

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Macfadyena unguis-cati: Cats Claw Vine

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Description
Form: Vine.
Lifespan: Perennial.
Leaf retention: Evergreen but cold deciduous.
Growth rate: Rapid.
Mature Size: 25-30' long.
Flowers: Yellow trumpet flowers 3-4" wide.
Bloom: Spring, possibly summer. Each flower lasts one or two days. In full sun, more flowers bloom at one time, and the total bloom time may be two weeks. In full shade, the plant may bloom sporadically throughout spring and summer, most heavily in the spring.
Fruit: Seed pod often 20" long, green turning to brown, containing oblong, flat, winged seeds.
Leaves: Green leaves occur in pairs.
Stems: Woody, roots form at nodes wherever soil is touched. Three pronged, clawed tendrils at intervals along stem assist in vertical climbing.
Roots: Large underground tubers and above-ground roots called stolons. Invasive in moist soils. Becomes highly invasive in rainy weather.
Wildlife: Attracts bees and birds.
Toxic / Danger: Handling plant may cause skin irritation.
Origin: Tropical America.

Cultivation and Uses
USDA hardiness zones: 8b-10.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to full shade. Full sun produces the most flowers at one time.
Water once established: Once or twice a month.
Soil: Adaptable, pH 6.1-7.8 (slightly acidic to slightly alkaline).
Prune: Border pruning: must be headed back if growing in unwanted direction.
Litter: Low.
Propagation: Seed, cuttings or tubers.
Uses: Ornamental, erosion control and ground cover in desert areas, provide shade or hide a vertical surface such as a fence. Withstands light foot traffic. Grow in pots to prevent invasiveness.

Comments
This plant is benign in dry climates, but difficult to eradicate where periodic rainy weather occurs.



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Macfadyena unguis-cati: Cat Claw Vine - flower

Macfadyena unguis-cati: Cat Claw Vine - tendrils

Macfadyena unguis-cati: Cat Claw Vine