How to Grow and Care Chandni Plant Bonsai (Crepe Jasmine)
Chandni (Tabernaemontana divaricata), or crepe jasmine, grows into an easy flowering bonsai: give it about six hours of sun, a free-draining slightly acidic mix, water when the top inch dries, and prune after each flush. It is evergreen in warm regions, flowers mainly from spring to autumn, and its milky sap is toxic if eaten.
Quick facts
| Detail | What you need to know |
|---|---|
| Botanical name | Tabernaemontana divaricata (family Apocynaceae) |
| Common names | Chandni, crepe jasmine, crape jasmine, pinwheel flower, East India rosebay, Nero's crown |
| Light | Full sun to partial shade; at least 5-6 hours of direct sun for good flowering, with afternoon shade in peak summer |
| Watering | Summer: daily or twice daily in pots. Monsoon: only when the top inch dries, never on waterlogged soil. Winter: every 3-5 days |
| Soil | Free-draining, slightly acidic to neutral (about pH 5.5-7.0); garden soil with compost and coarse sand |
| Temperature | Thrives at 20-35°C; shade it above 40°C; protect below 10°C, and from frost (USDA zones 9-11) |
| Toxicity | Milky sap is toxic if swallowed and can irritate skin; keep cuttings and prunings away from children and pets |
| Ideal spot in an Indian home | Sunny balcony, terrace, courtyard or garden edge; not a long-term indoor plant |
Despite the name, crepe jasmine is not a true jasmine. Once, almost every fragrant white flower was nicknamed jasmine, and the name stuck. Like other members of the Apocynaceae family, broken stems bleed a milky sap.
The shrub takes to shrubberies and hedges, but it is just as attractive grown as a small tree: strip the lower branches, keep pruning the crown, and you have a compact flowering bonsai.
Chandni Plant Bonsai specification
| Botanical name | Tabernaemontana divaricata |
| Common name | Crepe Jasmine, Chandni Plant |
| Family | Apocynaceae |
| Height | 6-10 ft in the ground; 1-3 ft as bonsai |
| Width | 5-8 ft in the ground |
| Flowers | White, pinwheel-shaped, lightly fragrant in the evening |
| Sunlight | Partial sun to full sun |
| Watering | Moist but never soggy |
| Soil | Sandy loam to clay loam, well drained |
| Fertilizer | Bonsai liquid fertiliser or compost, fortnightly in the growing season |
| Suitable time for pruning | After the main flush; late monsoon to October in most of India |
| Suitable time for repotting | October to November, or February before new growth |
| Blooming time | Main flush spring to autumn; sporadic flowers year round in warm, frost-free areas |
You can also buy an outdoor bonsai tree online and start with an established plant. Abana Homes delivers across India, dispatches on the next working day, and offers free shipping on orders over Rs 999.
How to Grow Chandni Plant Bonsai
The simplest way to raise a Chandni bonsai is from stem cuttings taken off a mature, healthy mother plant.
- Take semi-hardwood cuttings 4-6 inches long, just below a node, and strip the lower leaves. Let the cut end dry for a few minutes so the milky sap stops flowing.
- Dip the base in rooting hormone to speed up rooting.
- Fill a pot or grow bag with river sand and cocopeat in equal parts, insert the cutting, and firm it in.
- Keep it in bright shade and water lightly but regularly. Soggy media rot the cuttings.
- Roots usually form in 4-6 weeks. When new leaves appear and the cutting resists a gentle tug, shift it to a training pot.
For planting directly in the ground, choose a spot with morning sun and sharp drainage. Heavy, water-holding soil is the commonest reason this plant fails.
How to Care Chandni Plant Bonsai
Temperature
Chandni is a tropical shrub and grows best between 20°C and 35°C. During a north Indian heatwave, when the afternoon crosses 40°C, move pots into bright shade or behind a shade net; leaves scorch and buds drop in dry, hot wind. Below 10°C growth stalls, and frost damages soft wood, so shift pots against a wall or indoors near a bright window on cold nights in the north. In Mumbai, Chennai, Bengaluru and the coastal south the plant stays comfortable outdoors all year.
If you are growing Chandni plant bonsai outside India, USDA hardiness zones 9-11 suit it. The active growing season runs from March to October in most of India.
Sunlight
Chandni bonsai loves light. Full sun or bright partial shade both work, but deep shade gives leggy growth and few flowers. Aim for at least 5-6 hours of direct sun. On a balcony, a south or east-facing rail is ideal; in peak May and June, filtered afternoon light keeps the foliage from bleaching.
Watering
Keep the soil evenly moist, never waterlogged. Push your index finger an inch into the mix: if soil sticks to your finger, wait; if it comes out dry and dusty, water until it drains from the holes.
- Summer: small bonsai pots may need water once or twice a day.
- Monsoon: move pots under cover during long spells of rain and check drainage holes; standing water causes root rot.
- Winter: stretch the gap to every 3-5 days as growth slows.
Reduce watering slightly once the bonsai plant is well rooted, and avoid swings between bone-dry and soaking while it is in bud, as erratic moisture makes buds drop.
Soil
A simple mix is 70% garden soil with 30% well-rotted cow dung compost. If your local soil is clayey, use 50% garden soil, 20% coarse sand and 30% compost so water runs through freely. For a shallow bonsai pot, add extra sand or fine gravel.
Crepe jasmine adapts to most soils provided drainage is good; poor drainage leads to root rot. It prefers slightly acidic to neutral soil, roughly pH 5.5-7.0. In strongly alkaline soil the leaves can turn pale between the veins (chlorosis); correct this with compost, and with chelated iron or an acidic fertiliser rather than home remedies. Skip vinegar drenches, which do not change soil pH for long and can scorch fine roots.
Repotting & Pruning
Because Chandni is naturally a shrub, removing lower branches and shortening the crown is what turns it into a tree-like bonsai. Pruning also keeps the silhouette tight.
In a small pot the plant becomes root-bound quickly. Check the root ball once a year; if roots circle the pot, root pruning or repotting is essential, otherwise the plant slowly declines.
Method 1 (full-sized plant): lift the root ball out and move it into a larger container so the roots have room to spread.
Method 2 (bonsai): choose a suitable shallow bonsai pot, lift the root ball, trim the outer and thickest roots by up to a third, and settle it into the new pot with fresh mix. Water well and keep in shade for a fortnight.
Pruning Chandni bonsai plant
Two reasons to prune this evergreen flowering shrub:
- Removing old, damaged or dead wood improves airflow and reduces disease.
- Fresh shoots carry the flowers, so pruning increases bloom.
Think of pruning in four kinds:
Minimal pruning: take out only dead, diseased, damaged or crossing branches. Do this in early spring, or any time you spot a problem.
Structural spring pruning: shorten branches in February or March to force vigorous new shoots, which then carry the summer flowers.
Pruning after flowering: cut back the shoots that have bloomed and thin some older growth to keep the canopy open.
Thinning suckers and old wood: cut older flowering stems back by half and remove suckers from the base to push energy into the trunk line.
The monsoon and the weeks just after it are the easiest time to prune, as the plant recovers fast. September to October suits most Indian gardens, with repotting in October-November or in February. Avoid hard pruning in the coldest weeks in north India.
Propagation
Crepe jasmine propagates readily from cuttings, and also from air layering on thicker branches if you want instant trunk thickness for bonsai. Plant cuttings during the monsoon or in spring, when warmth and humidity are on your side; expect roots in about four to six weeks.
Fertilizing
Flowering needs phosphorus; healthy green leaves need nitrogen. Feed only during active growth, roughly February to October.
- Twice a year, in February and September, work in a handful of cow dung compost, dry leaf compost, neem cake and 2 tbsp bone meal.
- Every 15 days, apply a liquid feed: 1 tsp NPK in 1 litre of water, using about 200 ml per plant.
- As an alternative, apply DAP every 15 days. Scrape away an inch of soil along the inner rim of the bonsai pot, sprinkle 1 tsp (25-30 granules for a large pot, 10-12 for a small one), cover with soil and water. Never place it against the stem.
- Prefer organic only? Hoe in cow dung compost every 15-20 days and water it in.
Do not over-feed. Excess fertiliser burns roots and yellows the leaves. Stop feeding through the coldest weeks of winter.
Winter care
Chandni is evergreen in warm, frost-free areas and keeps its leaves all year in the south and along the coasts. In north Indian winters growth stops and the plant may yellow and shed a good part of its foliage, leaving a bare tangle of branches. This is cold stress, not death; the plant pushes fresh shoots once the soil warms in February and March. Cut watering back, hold off fertiliser, keep it in the sun, and move pots away from cold winds and frost.
Diseases & Pest
Oleander hawkmoth caterpillars chew the leaves. Whiteflies, mealybugs, scale insects, nematodes and sooty mould can also appear, especially in humid monsoon weather.
Pick off caterpillars by hand and spray neem oil as a preventative: mix 4-5 ml neem oil and 2-3 drops of mild liquid soap in 1 litre of water and spray the leaves, including the undersides, in the evening. Repeat weekly until the problem clears.
Toxicity and Medicinal Use
Chandni belongs to the Apocynaceae family, which contains plants with toxic alkaloids. The milky sap can irritate skin and eyes and is harmful if swallowed, so wear gloves when pruning, wash your hands afterwards, and keep prunings away from children, dogs and cats.
The plant has a long history in Ayurveda and in traditional medicine across South and Southeast Asia, where roots, leaves and latex have been used in preparations for wounds, skin complaints and pain relief, and extracts are used in cosmetics and perfumery. These are traditional uses, not proven treatments. Do not eat or self-medicate with any part of the plant, and speak to a qualified practitioner before using it medicinally.
Conclusion
Chandni is one of the easiest flowering shrubs to train as bonsai for an Indian balcony or terrace. It is tropical and evergreen, branches freely, and responds well to pruning, which is why it also makes tidy hedges and garden borders. Give it sun, sharp drainage and a steady fortnightly feed, and you will get clusters of white pinwheel flowers from spring right through autumn. If you enjoy reading about bonsai, browse our other guides.
Frequently Asked Questions
How do you care for Chandni plant bonsai?
Grow it in free-draining, slightly acidic soil with at least five hours of sun. Water when the top inch of soil dries, feed a phosphorus-rich fertiliser fortnightly from February to October, prune after each flowering flush, and protect it from frost and from 40°C-plus afternoon heat.
Is the Chandni plant poisonous?
Yes. Like other Apocynaceae, crepe jasmine produces a milky sap containing toxic alkaloids. It can irritate skin and eyes and is harmful if eaten, so keep prunings and fallen parts away from children and pets, and wear gloves while pruning.
Why is my Chandni plant not flowering?
Too little sun is the usual cause; it needs five to six hours of direct light. Other reasons are excess nitrogen, which pushes leaves instead of buds, hard pruning at the wrong time, a badly root-bound pot, or moisture swings that make buds drop.
Does the Chandni plant lose its leaves in winter?
In warm, frost-free parts of India it stays evergreen. In north Indian winters growth stops and the plant often yellows and drops much of its foliage from cold stress. Reduce watering, stop feeding, keep it in sun, and fresh shoots return by February or March.
Can Chandni be grown indoors?
Not as a permanent indoor plant. It needs several hours of direct sun to flower and will stretch and stop blooming in a dim or air-conditioned room. Keep it on a sunny balcony or terrace and bring it indoors only briefly, such as on frosty nights.
How do you propagate crepe jasmine from cuttings?
Take 4-6 inch semi-hardwood cuttings in spring or the monsoon, remove the lower leaves, dip the base in rooting hormone, and plant in equal parts river sand and cocopeat. Keep in bright shade, water lightly, and expect roots in four to six weeks.
What is the English name of the Chandni plant?
Crepe jasmine, also spelt crape jasmine. Other common names include pinwheel flower, Adam's apple, East India rosebay, moonbeam and Nero's crown. Its botanical name is Tabernaemontana divaricata, and despite the common name it is not a true jasmine.
What is the best fertiliser for Chandni bonsai?
Use a fertiliser higher in phosphorus than nitrogen, such as a 7-9-5 type, to encourage flowers rather than leafy growth. Apply a dilute liquid feed every 15 days in the growing season, with cow dung compost, neem cake and bone meal added in February and September.
Sources
- Missouri Botanical Garden Plant Finder: https://www.missouribotanicalgarden.org/plantfinder/plantfindersearch.aspx
- Royal Horticultural Society (RHS) plant advice: https://www.rhs.org.uk/advice