Jasmine: Species, Safety and Look-Alikes

This is the page to read before you buy, brew, forage or apply anything called jasmine. Everything else in this section is about how much a modest aromatic flower can and cannot do. This page is about the fact that “jasmine” is an English word attached to at least five unrelated plants, and two of them are poisonous.

The confusion is not academic. Gelsemium sempervirens is sold in garden centres and grows wild across the American Southeast under the names “Carolina jasmine” and “yellow jasmine”. It contains gelsemine and related alkaloids, and the clinical toxicology literature documents severe and fatal human poisonings — including from tea brewed out of the flowers by people who had read that jasmine is a calming herb. Cestrum nocturnum, “night-blooming jasmine”, is a nightshade planted in millions of warm-climate gardens and is toxic if eaten. Neither is a Jasminum. A reader who absorbs “jasmine is a gentle flower you can infuse” and applies it to the wrong plant is in genuine danger, and that is why this page exists rather than a paragraph of hedging at the bottom of another one.

Everything below is organised around one rule: the botanical name is the safety margin. If a product, a market stall or a garden label does not tell you the genus is Jasminum, you do not know what you have.

Table of Contents

1. The True Jasmines and How They Differ
2. The Dangerous One: Gelsemium sempervirens
3. The Other Toxic One: Cestrum nocturnum
4. Star Jasmine, Crape Jasmine and the Rest
5. Jasmine Rice Contains No Jasmine
6. How to Tell Them Apart
7. Buying Safely: Labels, Bulk Bins and Sulphites
8. Pregnancy, Breastfeeding and Children
9. Why the Oil Is Not the Tea
10. If You Think Someone Has Been Poisoned
11. Key Research Papers
12. Connections

The True Jasmines and How They Differ

Genus Jasminum, family Oleaceae — the olive family, alongside olive, ash, lilac, forsythia and privet. Around two hundred species, of which three matter to readers of this site.

• Jasminum sambac — Arabian jasmine, sampaguita, melati, mo li hua. The tea and garland species, and the subject of our main jasmine page. A scrambling evergreen shrub or weak vine to two or three metres, glossy opposite leaves, waxy white flowers about two centimetres across that darken to purplish as they wilt. Opens at night. National flower of both the Philippines and Indonesia. This is the species scenting jasmine tea and the one strung into garlands from Manila to Chennai. Cultivar forms include the single “Maid of Orleans”, the semi-double “Belle of India” and the fully double “Grand Duke of Tuscany”, which resembles a small gardenia and is comparatively scentless.
• Jasminum grandiflorum — Spanish jasmine, royal jasmine. Sometimes treated as J. officinale f. grandiflorum. The perfumery species, grown at scale in Grasse, Egypt and Tamil Nadu for jasmine absolute. Richer, more indolic, the “classic” jasmine of French perfumery. When a perfumer says “jasmine absolute” without qualification, this is usually what they mean. It also has its own separate research literature, which is frequently quoted as if it were the tea species'.
• Jasminum officinale — common jasmine, poet's jasmine, summer jasmine. The hardy climber of European gardens, with pinnate leaves and starry white flowers. The species most Western readers picture when they hear “jasmine”. Also used in perfumery and traditional medicine.

Others you may meet: J. auriculatum and J. multiflorum in Indian horticulture and garland-making; J. nudiflorum, winter jasmine, a hardy yellow-flowered Chinese species that is a genuine Jasminum despite the yellow flowers — and therefore not the same as “yellow jasmine”, which is the toxic Gelsemium. That particular collision of common names is one of the nastiest in horticulture.

Practical consequence of the species split: if an aromatherapy bottle says only “jasmine”, you do not know whether you have grandiflorum, officinale or sambac. They smell distinguishably different, their traditional uses differ, and their small research literatures are not interchangeable. A reputable supplier prints the binomial.

The Dangerous One: Gelsemium sempervirens

Names: Carolina jasmine, Carolina jessamine, yellow jasmine, yellow jessamine, evening trumpetflower, woodbine. Family: Gelsemiaceae — not Oleaceae, not remotely related to jasmine.

What it is. A vigorous twining woody vine native to the southeastern United States, widely planted as an ornamental for its abundant fragrant yellow trumpet-shaped flowers in late winter and spring. It is the state flower of South Carolina. It grows over fences, mailboxes and porches across a large part of the American South, and it is sold in nurseries.

Why it is dangerous. The whole plant contains indole alkaloids — gelsemine, gelsemicine, gelsedine, sempervirine and others — which act on glycine receptors and nicotinic acetylcholine receptors. Reported features of significant poisoning include nausea and vomiting, dizziness, weakness, visual disturbance and drooping eyelids, difficulty swallowing and speaking, muscle rigidity and spasm, seizures, and in severe cases respiratory paralysis and death. The related Asian species Gelsemium elegans (“heartbreak grass”) has an extensive poisoning literature in China, including deaths from misidentification as an edible or medicinal plant. Honey made by bees working Gelsemium has also been implicated in toxicity, which gives a sense of how potent the alkaloids are.

Why it gets confused with jasmine. Three reasons compounding each other. The common name literally contains “jasmine”. It is strongly and pleasantly fragrant, which reads as “aromatic herb”. And it is a climbing vine with tubular flowers, so a person who has only seen jasmine in photographs has no reliable visual anchor. Add a wellness article saying jasmine flowers make a calming tea, and the accident is fully assembled.

The distinguishing features, if you need them: Gelsemium flowers are yellow and distinctly trumpet-shaped with five fused lobes; leaves are simple, lance-shaped, opposite and evergreen; it is a woody twiner that climbs by wrapping. True Jasminum sambac flowers are white, flat-faced and open at night; leaves are simple, broad and oval; the plant is a shrubby scrambler rather than an aggressive twiner. Jasminum officinale has pinnate (divided) leaves and white starry flowers — the divided leaf is the fastest tell against Gelsemium's simple ones.

The rule. Do not brew, eat, chew, juice or tincture any yellow-flowered vine called jasmine. There is no preparation of Gelsemium sempervirens that is safe for casual use, and homeopathic dilutions of “Gelsemium” sold in shops are a completely separate matter that should not be taken as reassurance about the plant.

The Other Toxic One: Cestrum nocturnum

Names: night-blooming jasmine, night jessamine, lady of the night, raat ki rani, dama de noche, queen of the night. Family: Solanaceae — the nightshade family, alongside tomato, potato, tobacco, belladonna and datura.

What it is. A shrub to two or three metres, native to the Caribbean and Central America, now planted across South and Southeast Asia, Australia, the southern United States and the tropics generally. Small greenish-white tubular flowers that release an extraordinarily powerful sweet scent after dark — strong enough to be smelled from a considerable distance and, for some people, strong enough to cause headache and nausea in an enclosed space. It produces small white berries.

Why it is a problem. As a Cestrum, it contains solanaceous glycoalkaloids and, in the genus more broadly, compounds implicated in livestock poisoning — the veterinary literature on Cestrum species and hepatotoxicity in cattle is substantial. Human ingestion, particularly of the berries, is treated as toxic, with gastrointestinal and neurological effects. It is on invasive-species lists in several jurisdictions and is a noxious weed in parts of Australia and the Pacific.

Why it gets confused with jasmine. This is the most understandable of all the confusions and it is very widespread in Asia. J. sambac is a small white flower that opens at night and smells intense. So is Cestrum nocturnum. They are planted in the same gardens, often side by side, and both are called jasmine in everyday speech across the region. A white, night-scented flower in a South or Southeast Asian garden is at least as likely to be Cestrum as Jasminum.

The distinguishing features: Cestrum flowers are greenish-white, narrow and long-tubed, borne in dense clusters, and they hang; the scent is heavier and more cloying. J. sambac flowers are pure waxy white, flat-faced with spreading lobes, borne singly or in small groups, and the plant produces no berries of consequence. Cestrum's leaves are alternate; Jasminum's are opposite. If it makes berries, it is not J. sambac.

The rule. Do not eat any part of a night-blooming shrub called jasmine, and keep the berries away from children. Enjoying the smell in a garden is fine; the risk is ingestion.

Star Jasmine, Crape Jasmine and the Rest

These are not in the Gelsemium class of hazard, but they are not Jasminum and they are not infusion herbs.

• Trachelospermum jasminoides — star jasmine, confederate jasmine. Family Apocynaceae. An extremely common wall, fence and pergola vine with glossy opposite leaves, pinwheel-shaped white flowers and a strong sweet scent. Its sap is milky and irritant, as is typical of the family, and it can cause contact dermatitis. Not a jasmine, not a tea. Frequently the actual plant behind “my jasmine is flowering” in temperate gardens.
• Tabernaemontana divaricata — crape jasmine, pinwheel flower, chandni, nandiyavattai. Also Apocynaceae. A genuine medicinal plant in its own right, with its own indole alkaloid chemistry, its own traditional indications and its own precautions — and therefore a different subject rather than a jasmine variety. We cover it separately at Crape Jasmine. Do not read jasmine's safety record onto it.
• Stephanotis floribunda — Madagascar jasmine, bridal wreath. Apocynaceae again. A waxy white-flowered climber sold as a houseplant and used in bouquets. Ornamental only.
• Gardenia jasminoides — cape jasmine. Rubiaceae. The species epithet means “jasmine-like”, and the confusion follows from that. A separate plant with its own East Asian medicinal tradition (zhi zi in Chinese medicine, which uses the fruit) that should not be conflated with jasmine.
• Cestrum diurnum — day-blooming jasmine. The daytime sibling of the night-blooming species above, and likewise a toxic Solanaceae, notably implicated in calcinosis in grazing animals.
• “Chilean jasmine” (Mandevilla laxa), “Cape jasmine”, “Orange jasmine” (Murraya paniculata) and a long tail of others. The pattern is consistent: fragrant white flower, therefore “jasmine”.

The lesson generalises past this plant. Common names track appearance and smell; botanical names track ancestry and therefore chemistry. Only the second one predicts what will happen when you swallow something.

Jasmine Rice Contains No Jasmine

Worth its own section because it circulates endlessly, sometimes attached to claims that eating jasmine rice delivers jasmine's calming effects.

Thai hom mali rice — “jasmine rice” in English — has no botanical relationship to jasmine and contains none of it. The name refers to the grain's bright pearly whiteness, like the mali flower, and to a general association with fragrance. The aroma comes from 2-acetyl-1-pyrroline, produced by the rice plant itself, and the same compound gives pandan leaf, basmati rice and fresh bread crust their characteristic smell. Eating jasmine rice delivers no jasmine compound of any kind.

How to Tell Them Apart

A short field checklist. It is deliberately conservative: the goal is to reject anything uncertain, not to make a confident identification from a photograph.

1. Flower colour. Yellow trumpet flowers on a twining vine: assume Gelsemium and do not ingest. (True J. nudiflorum, winter jasmine, is also yellow — which is exactly why colour alone is not enough, and why you reject rather than proceed.)
2. Family habit. Milky sap when a leaf or stem is broken means Apocynaceae — star jasmine, crape jasmine, Madagascar jasmine. Jasminum does not have milky sap.
3. Leaf arrangement. Jasminum leaves are opposite. Cestrum leaves are alternate. This is a fast and reliable check.
4. Flower shape. J. sambac: pure white, waxy, flat-faced with spreading lobes, roughly two centimetres, darkening to purplish as it wilts. Cestrum nocturnum: greenish-white, narrow, long-tubed, in hanging clusters. Gelsemium: yellow, funnel-shaped.
5. Berries. Conspicuous berries mean it is not J. sambac. Cestrum produces white berries.
6. Bloom time and habit. J. sambac opens at night in warm weather and cannot survive frost. Gelsemium flowers in late winter to spring and is cold-hardy through much of the American South.
7. Smell, used as a warning rather than a confirmation. J. sambac is sweet, green, faintly citrus. Cestrum is heavier and cloying, and often unpleasantly strong indoors. Gelsemium is pleasant too — a nice smell tells you nothing about safety.
8. The overriding rule. If you cannot name the species with confidence, do not ingest it, do not brew it and do not apply it. There is no situation in which the cost of being wrong is worth the benefit of a floral infusion.

For authoritative name-checking, Plants of the World Online from Kew will tell you whether a name is really a Jasminum, and local herbaria and extension services will identify a physical specimen.

Buying Safely: Labels, Bulk Bins and Sulphites

• Insist on a binomial. Jasminum sambac, Jasminum officinale or Jasminum grandiflorum printed on the packet. No binomial on a product intended for ingestion is a reason to put it back.
• Be careful with unlabelled bulk “jasmine flowers”. Loose dried flowers scooped from an unmarked bin, bought from a market stall or ordered from a marketplace listing with no species named, is the single highest-risk purchase in this whole subject — because it is exactly the product where a substitution or contamination would be invisible.
• Sulphites. Some dried jasmine blossom is sulphite-treated to keep it bright white, as with many dried floral and fruit products. Sulphite-sensitive asthmatics can react to sulphites in food, and dried plant material is a plausible source. Unnaturally uniform brilliant whiteness in dried flowers is a reasonable prompt to look for an “unsulphured” declaration.
• Scented tea is a lower-risk purchase than loose flowers, because the product is overwhelmingly Camellia sinensis leaf from a commercial tea supply chain and the flowers have generally been sieved out. See Jasmine Tea vs Green Tea.
• “Jasmine essential oil” at a low price is not jasmine. Jasmine cannot be meaningfully steam-distilled, so genuine material is solvent-extracted absolute and is extremely expensive. Cheap product is a synthetic reconstruction or a heavy dilution. That is acceptable for a room scent; it is not acceptable if you were about to dose based on an assumption of potency.
• Do not forage for jasmine to eat or brew. The upside is a pleasant infusion. The downside is Gelsemium. The asymmetry is absolute.

Pregnancy, Breastfeeding and Children

The important structural point here is that the cautions attach to the concentrated oil, not to a cup of scented tea, and popular writing routinely collapses the two into a blanket “avoid jasmine in pregnancy” that is both unhelpful and inaccurate.

• Pregnancy — scented tea. Jasmine tea is a green tea. Its only routinely pregnancy-relevant component is caffeine, for which usual guidance is around 200 mg a day; a cup of green tea is roughly 20–45 mg depending on brewing. Tea polyphenols also reduce non-heme iron absorption when drunk with meals, which matters more in pregnancy than usually — drink tea between meals. Neither of these is a jasmine effect.
• Pregnancy — concentrated oil and absolute. Not evaluated in pregnancy, and must not be ingested by anyone at any time. Topical and diffused use in pregnancy is a matter for individual judgement with a clinician; note separately that strong florals commonly worsen first-trimester nausea, which is often reason enough to skip the diffuser regardless of theoretical risk.
• Breastfeeding — the specific caution. Because of the traditional and clinically studied use of fresh jasmine flowers bound over the breasts to suppress lactation, women who intend to keep nursing should not apply jasmine flowers or flower poultices to the breasts. Drinking jasmine tea is a different matter and is not implicated. Details on the skin page; for any herb-and-breastfeeding question, LactMed is the resource.
• Children. Two separate risks. First, ingested essential oils are a well-recognised route of paediatric poisoning — keep concentrated aromatics locked away, not merely out of sight. Second, and more relevant here, the toxic look-alikes are common garden plants where children play. Gelsemium grows on fences in the American South; Cestrum makes white berries at child height across the tropics. Know what is in your garden.
• Pets. Several essential oils are hazardous to cats, which lack some of the hepatic conjugation capacity to handle them. Gelsemium and Cestrum are toxic to grazing animals and pets alike; the veterinary literature on Cestrum hepatotoxicity in cattle is extensive.

Why the Oil Is Not the Tea

A recurring source of harm with any aromatic plant is treating the concentrate as a stronger version of the food. For jasmine the gap is unusually wide.

• Jasmine absolute is solvent-extracted. Hexane produces a waxy concrete; ethanol washes out the aromatic fraction as the absolute. Trace extraction solvent remains. It is a perfumery material manufactured to perfumery standards, not a food ingredient manufactured to food standards.
• It is never meaningfully steam-distilled, because heat destroys the character. This is why real jasmine absolute is among the world's most expensive aromatics and why the phrase “jasmine essential oil” is itself a warning sign about a product's provenance.
• Concentration. An absolute concentrates the flower's volatiles by orders of magnitude relative to a brewed cup. Traditional texts describing “jasmine oil” almost always mean an infused or macerated oil — flowers steeped in a carrier — which is mild. Applying a historical usage to a modern concentrate is a category error that has caused real injuries with other plants.
• Therefore: external and aromatic use only. Diluted to roughly 0.5–1% for skin, never neat, never swallowed, never added to a drink to “boost the jasmine”, never near eyes or mucous membranes. Full detail on the skin page.

Meanwhile the flower itself, as food, has an excellent record. J. sambac is drunk daily as scented tea by enormous numbers of people and handled constantly as a garland flower, with no meaningful record of toxicity. Fresh flowers are used as garnish and in Thai nam loi mali scented water. Treat that as genuinely reassuring for ordinary culinary use — and treat it as saying nothing at all about the absolute.

If You Think Someone Has Been Poisoned

Act immediately; do not wait for symptoms and do not go looking for more information first.

1. In the United States, contact Poison Control — poison.org or 1-800-222-1222. Elsewhere, contact your national poisons information service or emergency number.
2. Call emergency services for any seizure, difficulty breathing, collapse, severe weakness, difficulty swallowing or altered consciousness.
3. Take the plant with you, or photograph it — leaf, flower and stem. Identification changes management, and clinicians frequently cannot get it from a description.
4. Do not induce vomiting unless specifically instructed by a poisons service or clinician.
5. Say what was taken, how much, when, and by whom — age and weight matter, particularly for a child.
6. Do not assume a small amount is safe with Gelsemium. The alkaloids are potent, and reported human poisonings have followed modest ingestions including brewed preparations.

Suspicion is enough to make the call. Poisons services exist to field exactly this question and will tell you if no action is needed.

Key Research Papers

Citations are given as PubMed topic searches rather than numeric record identifiers — deliberate site policy, because a mistyped identifier resolves silently to a different paper. Metadata is stated only where we are confident of it. No numeric results are asserted that we cannot support.

1. Gelsemium poisoning in humans — the clinical toxicology of “yellow jasmine” and “Carolina jasmine”, including cases following ingestion of flowers and brewed preparations. Clinical case literature. Find on PubMed
2. Gelsemium elegans toxicity and fatalities — the large Chinese literature on the related Asian species, including misidentification deaths. Find on PubMed
3. Gelsemine and related alkaloids — mechanism at glycine and nicotinic receptors. Preliminary (in vitro / animal). Find on PubMed
4. Cestrum nocturnum toxicity — “night-blooming jasmine”, human and animal reports. Find on PubMed
5. Cestrum hepatotoxicity in livestock — the veterinary literature that establishes the genus as genuinely toxic rather than merely unpalatable. Find on PubMed
6. Plant misidentification poisonings — the general literature on toxic plants mistaken for edible or medicinal ones, which is the mechanism this page is trying to interrupt. Find on PubMed
7. Herbal product adulteration and substitution, and DNA barcoding authentication — why an unlabelled bulk bin is a real risk rather than a theoretical one. Find on PubMed
8. Jasminum sambac phytochemistry reviews — what is actually in the true species. Find on PubMed
9. Jasminum grandiflorum literature — the perfumery species, frequently quoted as if it were the tea species. Find on PubMed
10. Shrivastav P, George K, Balasubramaniam N and colleagues, suppression of puerperal lactation using jasmine flowers (Jasminum sambac), Australian and New Zealand Journal of Obstetrics and Gynaecology, 1988 — the basis for the breastfeeding caution. Small clinical, unreplicated. Find on PubMed
11. Essential oil ingestion in children — the paediatric poisoning literature that justifies locking concentrates away. Find on PubMed
12. Sulphite sensitivity and sulphited dried plant material — relevant to bleached-white dried blossom. Find on PubMed
13. Jasmine absolute and fragrance contact dermatitis — the best-documented adverse effect of the true plant. Find on PubMed
14. 2-Acetyl-1-pyrroline in fragrant rice — why “jasmine rice” contains no jasmine. Find on PubMed

Connections

• All Herbs
• Jasmine — Benefits Deep Dive — the hub for this section.
• Arabian Jasmine (Jasminum sambac) — the true species: botany, culture, chemistry and traditional use.
• Jasmine Tea vs Green Tea — why scented tea is a lower-risk purchase than loose flowers.
• Jasmine Aroma for Stress and Sleep — the evidence that genuinely belongs to jasmine.
• Jasmine for Skin and Antimicrobial Use — dilutions, patch testing and the lactation-suppression file.
• Crape Jasmine (Tabernaemontana divaricata) — a genuinely different medicinal plant sharing the name.
• Pandan — shares 2-acetyl-1-pyrroline with “jasmine” rice, which contains no jasmine.
• Contact Dermatitis — the documented adverse effect of jasmine absolute, and of star jasmine's irritant latex.
• Lavender — the aromatic to reach for when you want a calming scent with real human trials.
• Chrysanthemum · Hibiscus · Butterfly Pea — floral infusions with unambiguous identities.
• Sacred Lotus — another culturally loaded Asian flower where the ritual role outruns the pharmacology.

Safety and disclaimer. Educational content, not medical advice. The central practical message of this page is an identification message: several toxic plants are sold, grown and foraged under the name “jasmine”, and only species of the genus Jasminum are the plant described in this section. Never brew, eat, chew or apply a plant identified only by the English word “jasmine”. Gelsemium sempervirens (“yellow jasmine”, “Carolina jasmine”) is seriously poisonous and has caused deaths; Cestrum nocturnum (“night-blooming jasmine”) is a toxic nightshade. If you suspect anyone has ingested either, contact poison control or emergency services immediately — do not wait for symptoms. Jasmine absolute and essential oil are for external and aromatic use only and must never be swallowed. Discuss any herb, oil or supplement with your clinician if you are pregnant, breastfeeding, taking prescription medication or managing a chronic condition.

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