Tabernaemontana divaricata

Care Guide: Planting, Soil & Watering

Overview: Crape jasmine is an evergreen flowering shrub for warm climates, growing in full sun to part shade in well-drained soil. It likes moderate, regular moisture but should not be left waterlogged.

Quick Care Requirements

Requirement	Ideal Condition
Planting Season	Warm season – spring, summer or autumn in frost-free zones (10+)
Growth Rate	Moderate
Soil Type	Rich, well-drained soil
Water Need	Low to Moderate – keep lightly moist, let surface dry between waterings

Planting & Establishment

• Best Planting Season: Plant during the warm months (spring to autumn) in its frost-free range.
• How to Plant:
  • Hole Preparation: Dig a hole about twice the width of the root ball and the same depth, loosening the sides.
  • Soil Amendments: Mix compost or organic matter into free-draining soil to enrich it.
  • Planting Depth: Set the shrub at its original soil level, keeping the root collar at the surface.
• Growth Speed & Expectations: A moderate grower reaching 1-3 m and flowering over a long warm-season period.

Soil, Watering & Drainage Care

• Soil Mix & Drainage Needs: Wants moisture-retentive but well-drained soil; in containers use a good potting mix with drainage. Avoid soggy roots.
• Watering Schedule & Technique:
  • Young / Newly Planted: Water regularly to keep the soil evenly moist while it establishes.
  • Established: Water moderately, letting the surface dry slightly between waterings.
  • Seasonal Adjustments: More in heat, less in cool weather.

Growing in Pots, Balconies & Indoors

Crepe jasmine (Tabernaemontana divaricata) is a tropical evergreen shrub, 1-3 m, with pinwheel white flowers and milky sap. The grower does not list it as a houseplant, but being shade-tolerant and tender it is often kept in a bright indoor spot in cold climates, and it makes a fine pot plant for a shaded-to-sunny patio.

Quick Details

• Container Size: A pot of about 15-30 L (4-8 gal), potting up as it grows (general guide)
• Indoor Suitability: Not listed as a houseplant, but tolerable in a bright room while young
• Best Spot: Full sun to half shade; bright, warm and frost-free
• Soil & Drainage: Rich, free-draining mix
• Watering in Pots: Keep lightly moist; average needs, less in cool spells

Indoors & On the Windowsill

• Houseplant: The grower marks it No, but as a shade-tolerant, tender shrub it is often grown in a bright indoor room in cold climates – give it bright, indirect to direct light and warmth.
• Windowsill growing: A young plant suits a bright window; it will eventually need a larger, bright indoor corner.
• Overwintering: Frost-tender – overwinter the pot indoors in a bright, warm spot in cool regions.

On a Balcony or Patio

• Light & wind: Give it sun to part shade in a warm, sheltered spot; shelter from cold wind. Pots in sun dry fast, so check moisture in summer.
• Practicalities: A stable pot suits the bushy shrub; move it under cover before frost.

Choosing the Pot, Soil & Long-Term Care

• Pot & drainage: Use a pot with strong drainage holes and skip a standing-water saucer to avoid root rot; terracotta breathes and dries out faster, while glazed or plastic pots hold moisture longer.
• Potting mix: Fill with a well-aerated, organic-rich medium – a quality potting mix, or peat/coir blended with perlite or vermiculite for free drainage.
• Feeding: Potted plants use up their soil quickly because watering leaches nutrients away, so feed a little more often than plants in open ground through the growing season.
• Repotting: Top up fresh mix each season and renew the soil or pot up about every couple of years, lightly trimming the root ball and top growth of established plants.
• Safety: The milky sap is toxic if eaten – keep it away from children and pets and avoid contact with the sap.

Bloom & Flower Guide

Quick Details

• Bloom Season: Spring, summer and autumn
• Time to First Bloom: Once the shrub is established (evergreen perennial)
• Flower Appearance: Fragrant, flat white five-petalled flowers (pinwheel-shaped)
• Edibility: Not eaten — grown as an ornamental (milky sap)

Detailed Blooming Overview

Crape jasmine is grown for its clean, flat white pinwheel flowers, which are fragrant — especially at night — and appear across spring, summer and autumn.

Flower Characteristics

• Flat, five-petalled white flowers with a pinwheel look; sweetly scented.

Bloom Care & Pollination

• Pollination: The evening fragrance draws night-flying pollinators such as moths.

Pruning, Training & Seasonal Maintenance

Crape jasmine (Tabernaemontana divaricata) is a fragrant, glossy-leaved evergreen shrub widely grown as an ornamental hedge. It is a naturally bushy, rounded evergreen that takes light pruning well and reblooms readily, because it flowers on the current season’s new growth. Shape it after a bloom flush or in late winter, keep cuts light, and note the milky latex when you work.

Quick Pruning & Maintenance Specs

Pruning Tolerance	Moderate to High — reshoots and reblooms after trimming
Primary Pruning Window	Late winter to early spring, before the main flush
Secondary Maintenance Window	Light shaping after a bloom flush; ongoing deadheading
Typical Frequency	Light, once or twice a year plus tidying
Main Objective	Density, shape and continued bloom
Young Plant Priority	Tip-pinch to build a bushy multi-stem framework
Mature Plant Priority	Shape, remove leggy or dead wood, light thinning
Best Tool Type	Bypass secateurs; precision snips for deadheading
Avoid Heavy Pruning During	Peak bloom and before any cold snap (tender)

Pruning by Plant Age & Size

Newly Established

Remove only damaged shoots and let it settle; a young plant needs foliage to build.

Young / Formative

Pinch the growing tips to encourage a dense, multi-stemmed, rounded framework. This early branching is what gives an even, well-clothed shrub later.

Mature / Established

Shape lightly, remove dead or leggy shoots, and thin only enough to keep the interior healthy. It holds a good natural form, so heavy work is seldom needed.

Seasonal Pruning Schedule

Late winter / early spring (pre-growth): the main light shaping, done before the flush so the new flowering wood is stimulated.

After a bloom flush: light tidy and deadhead to prompt the next round of flowers.

Ongoing sanitary: remove spent blooms and dead twigs; avoid heavy cuts during peak bloom since it flowers much of the year in warmth.

Flowering & Fruiting Wood

Flowers are borne on the current season’s new shoots, so light pruning actually encourages more flowering by promoting branching. A hard cutback delays bloom only until the new wood matures. The waxy white five-petalled (and double-flowered) blooms form on new wood, so trimming refreshes the display.

Structural Pruning & Training

Remove crossing, inward and leggy shoots and lightly thin. It hedges neatly if wanted, but selective pruning shows the pinwheel flowers to best effect. For the best flower display, favour selective cuts over shearing.

Special Growth to Remove

• Spent flowers and dead twigs. The plant bleeds milky latex from cuts — not harmful to the plant, but wear gloves. There are no suckers to manage.

Container & Small-Space Pruning

An excellent patio and container shrub: pinch regularly to keep it compact and floriferous. Container plants respond to the same light tip pruning rather than hard cuts.

Tools

Bypass secateurs for shaping and precision snips for deadheading. Hedge shears only if it is deliberately grown as a low formal hedge; otherwise selective cuts preserve the flowers.

Tool Hygiene & Disease Risk

Routine: a clean, sharp blade is enough — this shrub carries low pruning-disease risk. Wipe latex off the blades after working.

Cut Placement & Technique

Cut just above an outward-facing node; combine light heading (for density) with occasional thinning. Deadhead back to the next bud or leaf pair.

Heavy Pruning & Rejuvenation

Moderate rejuvenation is tolerated — a leggy old plant can be cut back harder and will reshoot, with a temporary loss of flowers until new wood forms. Do this in late winter, not going into cold.

Post-Pruning Care

Water normally; a light feed is worthwhile only after a genuine rejuvenation cut, not after routine tidying.

Common Pruning Mistakes

• Shearing a plant grown for its individual flowers, which removes the very shoots about to bloom.
• Hard-pruning in the middle of the flowering period.
• Cutting just before a cold snap on a tender, zone-10 shrub.

When NOT to Prune

Do not prune heading into cold weather, and avoid heavy cuts during peak bloom if you want to keep the flowers.

Recommended Tools (by task)

• bypass_secateurs — light shaping and thinning of woody shoots.
• precision_snips — deadheading and tip-pinching for density and rebloom.

Pruning Troubleshooting

Problem	Possible Cause	What to Check	Corrective Action
Leggy, sparse shrub	No early tip-pinching	Branching density and shoot length	Pinch tips through the growing season to rebuild density
Few flowers after trimming	Sheared off developing new-wood shoots	When and how it was cut	Switch to light selective cuts before the flush; avoid shearing
Dieback of shoots	Cold damage on a tender shrub	Recent low temperatures	Delay pruning until frost risk passes; cut back to live wood

Pests, Diseases & Troubleshooting

Overview: Crape jasmine (Tabernaemontana divaricata, ‘pinwheel flower’) is a tropical Apocynaceae shrub with milky sap. It is fairly trouble-free; its usual issues are the family’s sap-suckers — mealybugs, soft scale, aphids and whitefly — whose honeydew brings disfiguring sooty mould, plus iron chlorosis on alkaline soils. Keep it vigorous and watch the leaf axils.

Quick Troubleshooting Overview

Issue / Pest	Main Symptom	Primary Solution
Mealybugs	White cottony tufts in axils and shoot tips	Alcohol swab, oil/soap, beneficials
Scale	Brown/white bumps on stems and leaves, honeydew	Prune out, horticultural oil
Aphids	Colonies on new shoots, sticky honeydew	Water jet, beneficials, insecticidal soap
Whiteflies	Tiny white flies, honeydew, sooty mould	Yellow sticky traps, soap/oil
Sooty mould	Black film on leaves over honeydew	Control the sap-suckers, wash off
Iron chlorosis	Yellow leaves with green veins	Acidify soil, iron chelate

Common Pests & Management

• Mealybugs (Planococcus, Pseudococcus spp.):
  • Symptoms: White cottony tufts in leaf axils, shoot tips and among roots of potted plants; honeydew, sooty mould and stunted, distorted growth.
  • Prevention & Control: Dab with an alcohol-tipped swab, drench roots if infested, and isolate affected plants. Horticultural oil or insecticidal soap repeated at intervals; quarantine new arrivals.
• Scale Insects (Aspidiotus nerii, Saissetia spp.):
  • Symptoms: Brown, grey or white limpet-like bumps encrusting stems and leaf undersides; yellow spotting, honeydew (soft scales) and sooty mould, and slow decline.
  • Prevention & Control: Prune out heavily encrusted wood, encourage parasitic wasps and lady beetles, and wash off honeydew. Horticultural oil smothers crawlers — repeat to catch successive hatches; treat in cool conditions.
• Oleander / Milkweed Aphid (Aphis nerii):
  • Symptoms: Dense colonies of bright yellow-orange aphids with black legs on new shoots, buds and flower stalks; sticky honeydew and black sooty mould. Almost universal on Apocynaceae.
  • Prevention & Control: Blast off with water and encourage ladybirds, lacewings and parasitic wasps (mummified brown aphids show they are working). Insecticidal soap or horticultural oil for heavy colonies; avoid excess nitrogen that fuels soft growth.
• Spider Mites (Tetranychus urticae):
  • Symptoms: Fine pale stippling turning leaves dull bronze, with delicate webbing beneath in hot, dry air; heavy attack scorches and drops leaves.
  • Prevention & Control: Raise humidity and hose down foliage, conserve predatory mites, and treat hot-spots with insecticidal soap or horticultural oil on the undersides.
• Whiteflies (Bemisia, Trialeurodes spp.):
  • Symptoms: Tiny white flies rising in clouds when disturbed; nymphs on leaf undersides excrete honeydew that blackens with sooty mould.
  • Prevention & Control: Yellow sticky traps to monitor and trap, encourage Encarsia and lacewings, and spray insecticidal soap or horticultural oil under the leaves.

Diseases & Fungal Issues

• Sooty Mould (Capnodium and allied fungi):
  • Symptoms: A black, soot-like film coating leaves and stems, growing on the honeydew excreted by aphids, scale, mealybugs and whitefly; blocks light and disfigures.
  • Treatment & Management: It is a symptom, not the cause — control the sap-sucking insects producing the honeydew and the mould weathers away. Wash off heavy deposits with soapy water.
• Fungal Leaf Spot (Cercospora, Alternaria, Phyllosticta spp.):
  • Symptoms: Brown or grey rounded spots, sometimes with yellow halos, on leaves in warm, humid, wet-leaf conditions; heavy spotting causes leaf drop.
  • Treatment & Management: Improve airflow, avoid overhead watering, and remove spotted and fallen leaves. A copper fungicide protects new growth under persistent wet pressure.
• Root Rot (Phytophthora, Pythium):
  • Symptoms: Yellowing, wilting and dieback with dark, rotted roots in heavy, waterlogged soil or overwatered pots.
  • Treatment & Management: Plant in free-draining soil, water when the surface dries, and avoid waterlogging; improve drainage and remove severely affected plants.

Growing Difficulties & Abiotic Problems

• Iron Chlorosis:
  • Cause & Symptoms: On alkaline or waterlogged soils the youngest leaves turn yellow between green veins as iron uptake fails.
  • Correction Strategy: Lower soil pH with organic matter/elemental sulfur, improve drainage, and apply chelated iron for a quick correction.
• Cold Sensitivity:
  • Cause & Symptoms: Below about 10C growth stalls and leaves yellow and drop; frost damages or kills soft growth.
  • Correction Strategy: Grow in a warm, sheltered spot or as a container plant moved under cover in cold spells; tidy cold-damaged shoots afterwards.
• Bud / Flower Drop:
  • Cause & Symptoms: Sudden shifts in light, temperature or watering, or drying out, cause buds to abort.
  • Correction Strategy: Keep conditions and moisture steady, especially during budding, and avoid moving flowering plants abruptly.

What Helps — Products & Tools

A gentle shrub kit: horticultural oil and insecticidal soap for mealybugs, scale, aphids, mites and whitefly, alcohol swabs for spot-treating mealybugs, yellow sticky traps for whitefly, chelated iron for chlorosis, and a copper fungicide only if leaf spot is bad. Controlling the sap-suckers clears the sooty mould automatically.

Propagation Guide

Semi-hardwood stem cuttings are the preferred method for crape jasmine and root easily. Because many garden plants are double-flowered selections, cuttings (or layering) are needed to keep the flower form — seed is variable and the double forms set little viable seed — and propagation is easy.

Quick Propagation Specs

Best Propagation Method	Semi-hardwood stem cuttings
Alternative Methods	Air layering; seed (single-flowered forms)
Propagation Difficulty	Easy
Seed True-to-Type	Variable; cultivar-dependent (double forms not true)
Vegetative True-to-Type	Yes
Best Propagation Season	Warm months (spring–autumn)
Cutting Rooting Time	Typically several weeks in warm, humid conditions

Stem Cuttings

Cutting Type

Semi-hardwood shoots with one or more nodes.

Best Timing

Warm growing season.

Cutting Preparation

Strip lower leaves; allow the milky latex to dry at the cut before inserting.

Rooting Setup

Well-drained medium, warm and humid.

Rooting Hormone

Optional, beneficial.

Rooting Time

Usually several weeks under warmth.

Air & Ground Layering

A reliable way to reproduce a chosen double-flowered plant: girdle a branch, enclose in moist medium, and detach when rooted after several weeks.

Growing from Seed

Only single-flowered plants tend to set viable seed; sow fresh and warm. Germination is slow, and seedlings vary, so seed is not used to keep a double-flowered form.