Carnation of India (Crepe Jasmine) care

Light

In the wild carnation of india grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Performs best in bright, indirect light or dappled sun. Direct harsh midday sun can scorch the glossy foliage; morning sun is fine. Indoors, a position 1-2 m from a south- or east-facing window suits it well. Insufficient light results in sparse flowering and leggy growth. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for every 5-7 days in growth, every 10-14 days in winter for carnation of india, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water moderately and consistently, allowing the top 2-3 cm of soil to dry between waterings. Never allow the root ball to stand in water — root rot develops rapidly. In winter, reduce watering but do not let the soil dry out completely. Use room-temperature water to avoid chilling the roots.

Soil and pot

Carnation of India grows best in well-draining, humus-rich, slightly acidic loam. A mix of 2 parts peat-free compost, 1 part perlite, and 1 part fine bark creates the ideal balance of moisture retention and free drainage. Target pH 5.5-6.5. Good drainage is critical; compacted, waterlogged soil causes rapid root decline. Repot every 2 years in spring, stepping up one pot size. 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

Carnation of India sits happiest at around 50-75% humidity and 15-32°C (59-90°F). Prefers humid conditions mirroring its tropical origin. Below 40% RH causes leaf yellowing, tip browning, and reduced flowering. Group with other humidity-loving plants, use a pebble tray filled with water, or run a humidifier nearby. Avoid direct misting of flowers, which can cause petal spotting. If you keep the room above 15 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 carnation of india sparingly. Feed every 2-3 weeks during the growing season (spring to early autumn) with a balanced liquid fertiliser at half strength. In midsummer, supplement with a high-potash feed to encourage continued blooming. Withhold fertiliser from October to February. 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 carnation of india in the Growli community. Each is annotated with the most common cause so you know where to start.

• Scale insects — Sticky honeydew deposits and sooty mould on leaves indicate scale insect infestations on stems and leaf undersides. Scrape off scales with a soft brush dipped in methylated spirits, and follow with two or three weekly applications of horticultural oil or insecticidal soap.
• Leaf yellowing in winter — A combination of low light, cold draught, and overwatering in winter causes yellowing and leaf drop. Move to the brightest frost-free position available, reduce watering, and keep temperatures above 15°C. Some winter defoliation is normal at lower temperatures.
• Failure to flower — Insufficient light is the most common reason. Ensure at least 4-5 hours of bright light daily. Also review nitrogen fertiliser use — excessive nitrogen encourages lush foliage at the expense of flowers. Switching to a phosphorus/potassium-rich formula in summer promotes blooming.

Propagation

Take 8-10 cm semi-hardwood cuttings in late spring or early summer. Remove the lower leaves, allow the cut end to callous for 30 minutes (to reduce latex bleed), dip in rooting hormone, and insert in a 50:50 perlite/peat-free compost mix. Maintain 24-26°C with high humidity. Rooting takes 4-8 weeks. Wear gloves when handling — the milky latex irritates skin and eyes. 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

Carnation of India is toxic to pets. Ervatamia coronaria (syn. Tabernaemontana) belongs to Apocynaceae, a family known for toxic indole alkaloids and cardiac glycosides. The milky white latex and all plant parts contain toxic alkaloids including tabersonine, coronaridine, and ibogaine-related compounds. Ingestion causes vomiting, cardiac arrhythmia, and potentially serious systemic toxicity in dogs and cats. The ASPCA does not individually list this species, but the family toxicity is well documented. Keep away from pets and children; contact a vet or ASPCA Animal Poison Control (888-426-4435) if ingestion occurs. 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.

Carnation of India deep-dive guides

Every aspect of carnation of india care, each with its own calibrated guide:

• Carnation of India watering schedule
• Carnation of India light requirements
• Best soil mix for carnation of india
• Carnation of India fertilizing guide
• When to repot carnation of india
• How to propagate carnation of india
• Carnation of India growth rate & size
• Carnation of India cold hardiness
• Carnation of India temperature & humidity
• Is carnation of india toxic to cats & dogs?
• Is carnation of india toxic to cats?
• Is carnation of india toxic to dogs?

Featured in these plant shortlists

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

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• 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

Related guides

Carnation of India is also known as Carnation of India, Crepe Jasmine, Pinwheel Flower, and East India Rosebay.

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