Pink Trumpet Vine (Port St. Johns Creeper) care

Light

Pink Trumpet Vine needs sun on the leaves, not just bright ambient room light. Full sun is essential for best flowering — at least 5–6 hours of direct sunlight daily. Tolerates light afternoon shade in very hot climates but produces fewer flowers. In cool climates, plant against a warm sunny wall. 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 pink trumpet vine every 7 days in summer; every 14–21 days in winter. 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. Water deeply and regularly through the growing season to support flower production. Reduce watering in winter when growth slows. Established plants tolerate short dry spells; prolonged drought causes leaf yellowing and flower loss.

Soil and pot

Pink Trumpet Vine grows best in moderately fertile, well-drained loam. Tolerates a range of soils provided drainage is good. Amend heavy clay with grit and compost. pH 6.0–7.5. Mulch around the base to conserve moisture and moderate soil temperature. 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

Pink Trumpet Vine sits happiest at around 40–75% humidity and 2 to 38°C (35 to 100°F). Adapts well to the moderate humidity of warm temperate and subtropical gardens. Does not require elevated humidity; handles relatively dry air once established. If you keep the room above 2 to 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 pink trumpet vine sparingly. Apply a balanced slow-release fertiliser in early spring as growth resumes. From late spring through summer, supplement with a high-potassium liquid fertiliser every 3–4 weeks to boost flowering. Stop feeding in autumn. 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 pink trumpet vine in the Growli community. Each is annotated with the most common cause so you know where to start.

• Frost dieback — Foliage and young stems are damaged or killed by frost below -2°C (28°F). In borderline climates, plant against a sheltered south- or west-facing wall, and mulch roots heavily before winter.
• Failure to bloom — Insufficient sun is the most common cause. Also check: excessive nitrogen fertilising (promotes leaves over flowers); drought stress during bud initiation; or the plant being too young (typically needs 2–3 seasons to bloom freely).
• Aphids on new growth — Tender growing tips attract aphids in spring and early summer. Spray with a strong water jet or insecticidal soap. Encourage natural predators by avoiding broad-spectrum pesticides.

Propagation

Semi-hardwood cuttings in late summer root well with rooting hormone in a warm, humid environment. Seeds germinates in 3–6 weeks at 22–25°C (72–77°F) in a propagator. Layering in autumn is also effective. 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

Pink Trumpet Vine is mildly toxic to pets. Podranea ricasoliana (Bignoniaceae) is not individually listed by ASPCA. No well-documented systemic toxic principle has been identified, but the family includes species with irritant compounds. Ingestion of foliage or seed pods by pets or children is not recommended. Treat as mildly toxic until an individual ASPCA assessment is available. 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.

Pink Trumpet Vine deep-dive guides

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

• Common pink trumpet vine problems & fixes
• Pink Trumpet Vine watering schedule
• Pink Trumpet Vine light requirements
• Best soil mix for pink trumpet vine
• Pink Trumpet Vine fertilizing guide
• When to repot pink trumpet vine
• How to propagate pink trumpet vine
• How to prune pink trumpet vine
• What's eating my pink trumpet vine?
• Pink Trumpet Vine growth rate & size
• Pink Trumpet Vine cold hardiness
• Pink Trumpet Vine temperature & humidity
• Is pink trumpet vine toxic to cats & dogs?
• Is pink trumpet vine toxic to cats?
• Is pink trumpet vine toxic to dogs?

Featured in these plant shortlists

Pink Trumpet Vine qualifies for 6 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.
• Best fragrant houseplants — Indoor plants with scented flowers or aromatic foliage — greenery you can smell, selected from our care library.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

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Pink Trumpet Vine is also known as Pink Trumpet Vine, Port St. Johns Creeper, and Zimbabwe Creeper.

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