Pseudogynoxys chenopodioides aka Mexican Flamevine

Pseudogynoxys chenopodioides is known as Mexican flame vine or orange-glow vine. It belongs to the daisy family, Asteraceae. Its native range runs from Mexico into tropical South America. It has been introduced to Florida, Puerto Rico, and Panama. The older name, Senecio confusus, remains a synonym. This evergreen vine grows fast and climbs by twining. Without support, it spreads into a loose, shrub-like form.

Garden size varies with climate and how it grows. NC State lists heights of 6–12 feet [1.8–3.7 metres]. It also reports outdoor lengths of 12–20 feet [3.7–6.1 metres]. RHS gives a taller range of 13–26 feet [4–8 metres]. Reported widths span about 3–8 feet [0.9–2.5 metres]. Plants grown as annuals stay below 12 feet [3.7 metres]. The smooth stems become woody as they age. Stems can also root where they touch the soil. Deep green leaves grow alternately along the stems. They are fleshy, arrow-shaped, and edged with small teeth. Many reach about 0.33 feet [0.10 metres] long.

Clusters of orange, daisy-like flowers stand above the green leaves. Each flower measures about 0.08 feet [0.025 metres] across. The blooms turn red as they age. RHS places most flowering in summer. NC State gives a June-to-October season. Chicago lists bloom periods from September through April. The sources thus report quite different flowering seasons. RHS notes scent; Chicago describes the smell as unpleasant. Small, fluffy seed heads follow the flowers. Bees and butterflies visit the plant, which also attracts birds.

Full sun gives the best growing conditions, though it tolerates light shade. Use well-drained loam with average to rich organic content. It accepts acid, neutral, and alkaline soils. Steady, moderate moisture suits it, despite its drought tolerance. Established plants can cope with short dry spells. Reported USDA zones range from 9–10 to 9–11. RHS rates it H1C and recommends a heated greenhouse. Its greenhouse guidance includes full light and good airflow. In colder areas, grow it as an annual. Pots can also spend winter indoors.

Fences, trellises, arches, and posts give this vine support. It also suits containers, hanging baskets, and butterfly gardens. Prune after flowering, following RHS guidance. Grow new plants from seed or stem cuttings. Sources report few serious pest or disease issues. Under glass, watch for whitefly, red spider mites, and aphids. NC State flags risks to cats, dogs, and horses. The supplied evidence gives no edible parts or human safety details.