Dolichandra unguis-cati

A vigorous fast-growing vine with large yellow trumpet flowers that can damage walls if not managed.
Evergreen to semi-evergreen in USDA zones 8-11 and root-hardy well below that; it takes low-desert frost with minor dieback, thrives in extreme heat, and is aggressive enough to be considered invasive in mild climates.
AMWUA Notes
Can damage walls with clinging tendrils; use with caution on structures. Aggressive and potentially invasive; plant only where its vigor can be contained.
Water deeply about once a week in summer for fast cover; it is adaptable but grows most aggressively with ample moisture, so lean watering helps restrain it.
Requires frequent, firm pruning to control its rampant growth and keep clinging tendrils off walls, roofs, and eaves; cut back hard in late winter and pull up runners and tubers that stray.
Do not fertilize; this vigorous grower needs no encouragement and feeding only worsens its spread.
Few insect pests, but it is itself the main problem, spreading by seed, runners, and underground tubers that resprout after cutting.
A profusion of large yellow trumpet flowers covers it in spring; it is evergreen to semi-evergreen and may drop leaves or die back only in hard frost.
Grows in almost any soil including poor and rocky ground; adaptable and undemanding, which contributes to its invasiveness.
Needs moderate soil.
None — thrives in lean desert soil without fertilizer.
Spreads by seed, above-ground runners, and underground tubers that resprout after cutting; do not propagate deliberately.
10-15 ft apart on a large chain-link fence (15 ft mature spread), sited away from structures
Aggressively invasive — underground tubers resprout after cutting and clinging claws pit and damage stucco and masonry; use a root barrier and keep far from walls, roofs, trees, and neighboring yards.
Attracts
Wildlife Value
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Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.