Flame vine (Orange trumpet vine) care

Light

Flame vine needs sun on the leaves, not just bright ambient room light. Requires full sun for maximum flowering. Position in a south- or west-facing aspect with at least 6 hours of direct sunlight daily. Poor light dramatically reduces bloom production; the vine flowers most abundantly at the top where it receives the most sun. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water flame vine every 7–10 days during establishment; once every 2–3 weeks once established.. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Drought-tolerant once established but grows more vigorously with moderate, regular watering during the dry season. Avoid overwatering — saturated soil causes root rot. Containers need more frequent attention than in-ground plants.

Soil and pot

Flame vine grows best in fertile, free-draining loam or sandy loam. Adapts to most well-drained soils, including sandy and clay-amended soils. Avoid heavy clay or waterlogged conditions. Incorporate compost at planting to improve fertility. Tolerates a wide pH range (5.5–8.0). A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Flame vine sits happiest at around 40–70% humidity and 5–38°C (41–100°F). Tolerates a range of humidity levels typical of subtropical and Mediterranean-type climates. Does not require misting or humidity trays when grown outdoors in its preferred zones. If you keep the room above 5–38°C year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed flame vine sparingly. Apply a balanced slow-release fertiliser in spring. Supplement with a potassium-rich liquid feed every 2 weeks during active growth to encourage prolific flowering. Prune after flowering then fertilise to encourage a new flush. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on flame vine in the Growli community. Each is annotated with the most common cause so you know where to start.

• Invasive / rampant growth — This vine grows very aggressively and can smother trees and structures if not regularly pruned. Cut back hard after flowering each year to keep it in check and direct its energy into bloom production.
• Root rot — The main cultural failure point. In containers or heavy soils, overwatering rapidly causes root rot. Ensure excellent drainage and allow the soil to dry out between watering cycles.
• Failure to flower — Usually caused by insufficient direct sunlight or excessive nitrogen fertiliser promoting foliage at the expense of blooms. Move to a sunnier position and switch to a low-nitrogen, high-potassium fertiliser.

Propagation

Propagate from semi-ripe stem cuttings taken in summer with bottom heat (21–24°C); rooting takes 3–6 weeks. Also propagates readily by layering — bend a long stem to the ground, pin and cover with moist soil until roots develop, then sever from the parent plant. Seeds may be sown in spring with gentle heat. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Flame vine is mildly toxic to pets. Pyrostegia venusta is not individually listed on the ASPCA toxic plants database. Some veterinary sources flag the plant as potentially irritating to grazing animals. Exercise caution by keeping the plant out of reach of pets and children. If ingestion is suspected, contact the ASPCA Poison Control Center (888-426-4435) for guidance. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Flame vine deep-dive guides

Every aspect of flame vine care, each with its own calibrated guide:

• Flame vine watering schedule
• Flame vine light requirements
• Best soil mix for flame vine
• Flame vine fertilizing guide
• When to repot flame vine
• How to propagate flame vine
• Flame vine growth rate & size
• Flame vine cold hardiness
• Flame vine temperature & humidity
• Is flame vine toxic to cats & dogs?
• Is flame vine toxic to cats?
• Is flame vine toxic to dogs?

Featured in these plant shortlists

Flame vine qualifies for 5 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Best fast-growing houseplants — Houseplants documented as fast or vigorous growers — quick to fill a pot, cover a pole or trail down a shelf.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Flame vine is also known as Flame vine, Orange trumpet vine, Golden shower, and Flamevine.

• Teddy Bear Palm care — light, water and common problems
• Baron's Palm care — light, water and common problems
• Cabada Palm care — light, water and common problems
• All 6887 plant care guides in the Growli library