Double Pinwheel Flower (Double Crape Jasmine) care

Light

Bright but filtered. Double Pinwheel Flower burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Full sun produces the most compact growth and heaviest blooming; bright indirect light suits indoor cultivation well. An east or south-east-facing window is ideal indoors. Insufficient light leads to sparse flowering and elongated, leggy stems. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering double pinwheel flower: every 5–7 days during active growth; reduce in winter. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Keep soil evenly moist throughout the growing season. Water sparingly in winter, allowing the top 2 cm of soil to dry. Never allow the root ball to completely dry out, which causes flower bud drop. Avoid water on the blooms, which can cause browning.

Soil and pot

Double Pinwheel Flower grows best in fertile, moist, well-draining potting mix or loamy garden soil. Slightly acidic to neutral pH (6.0–7.0) gives best results. A high-quality peat-free multipurpose compost with 20% perlite added works well in containers. Repot every 2–3 years as the plant fills the pot, which also refreshes depleted nutrients. 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

Double Pinwheel Flower sits happiest at around 50–70% humidity and 15–30°C (59–86°F). Requires moderate to high humidity; low humidity causes flower browning and leaf tip scorch. Group with other plants, use a pebble tray, or lightly mist the foliage (not the flowers) to maintain adequate moisture in the air around the plant. If you keep the room above 15–30°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 double pinwheel flower sparingly. Feed monthly with a balanced liquid fertiliser (10-10-10) from spring through late summer. In late winter, switch to a high-phosphorus bloom booster (e.g. 5-30-5) to stimulate the next flowering cycle. Withhold all fertiliser in winter when growth is minimal. 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 double pinwheel flower in the Growli community. Each is annotated with the most common cause so you know where to start.

• Bud drop — Flower buds falling before opening are usually caused by sudden temperature change, low humidity, irregular watering, or moving the plant while buds are forming. Stabilise conditions and keep soil evenly moist once buds appear.
• Powdery mildew — White powdery coating on leaves in low-light, poor-airflow conditions. Improve ventilation, reduce overhead humidity, and treat with a diluted bicarbonate of soda spray or a sulphur-based fungicide. Remove heavily affected leaves.
• Mealybugs — White cottony pests shelter in the dense double flower petals and leaf axils where they are hard to spot. Inspect blooms and axils regularly; treat with insecticidal soap or neem oil, applying carefully to avoid browning petals.

Propagation

Semi-hardwood stem cuttings (10–15 cm) taken in spring or early summer are the standard method. Wipe the cut end to remove latex, allow to air-dry for 15–20 minutes, dip in rooting hormone gel, and insert into a warm (24–28°C), high-humidity propagation environment with moist perlite/vermiculite. Roots develop in 4–6 weeks. The double-flowered cultivar does not come true from seed. 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

Double Pinwheel Flower is toxic to pets. Shares the same alkaloid toxicity profile as the species Tabernaemontana divaricata — all plant parts, including the milky latex, stem, leaves, and seeds, contain toxic ibogamine-type alkaloids. Not individually listed by ASPCA, but the genus and Apocynaceae family are recognised as toxic. Treat as toxic to cats, dogs, and children. Latex causes skin and eye irritation on contact. 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.

Double Pinwheel Flower deep-dive guides

Every aspect of double pinwheel flower care, each with its own calibrated guide:

• Double Pinwheel Flower watering schedule
• Double Pinwheel Flower light requirements
• Best soil mix for double pinwheel flower
• Double Pinwheel Flower fertilizing guide
• When to repot double pinwheel flower
• How to propagate double pinwheel flower
• Double Pinwheel Flower growth rate & size
• Double Pinwheel Flower cold hardiness
• Double Pinwheel Flower temperature & humidity
• Is double pinwheel flower toxic to cats & dogs?
• Is double pinwheel flower toxic to cats?
• Is double pinwheel flower toxic to dogs?

Featured in these plant shortlists

Double Pinwheel Flower 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

Double Pinwheel Flower is also known as Double Pinwheel Flower, Double Crape Jasmine, Crape Gardenia, and Fleur d'Amour.

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