Wild leek or lily of the valley? The toxic look-alikes not to confuse

Every spring, some foragers bring home something other than wild leek. The Northern New England Poison Center, which serves Vermont, next door to Quebec's Eastern Townships, handled 25 cases of possible false hellebore poisoning in 2020, more than four times the usual number. In Quebec, the Centre antipoison warns that false hellebore is often mistaken for wild leek. And in France, poison centres recorded 28 mix-ups involving bear's garlic, wild leek's European cousin, from 2020 to 2022, two of them fatal. Here's how to avoid the mistake.

The golden rule: every leaf must smell of garlic

Crushed between your fingers, a wild leek leaf smells of garlic. Its look-alikes don't. But the test has a catch, warns the German Federal Institute for Risk Assessment: the garlic smell stays on your hands and can make you think a toxic plant smells of garlic. The advice from Anses, France's health safety agency, and from the German institute:

• crush each leaf, one at a time, before putting it in your basket;
• never pick by the handful;
• if a plant doesn't smell of garlic, leave it where it is and wash your hands;
• take a photo of your harvest: if someone gets poisoned, it will help identify the plant;
• when in doubt, don't eat it.

The look-alikes at a glance

False hellebore, the most dangerous look-alike

False hellebore grows in wet areas: floodplains, marshes and swamps. Its leaves look pleated and grow from a stalk, while wild leek leaves are flat and rise straight from the ground, in maple forests. And it smells of neither garlic nor onion. "If it doesn't smell like an onion, don't eat it, it's not a ramp," sums up a Vermont Fish and Wildlife biologist.

All parts of the plant are toxic. Its alkaloids cause vomiting, a slow heartbeat and a drop in blood pressure, and the effects can last 1 to 10 days, according to the Centre antipoison du Québec. It describes the case of a 47-year-old man who had eaten four plants picked near the Saint-Charles River: at the emergency room, he was vomiting, had lost consciousness three times and his heart was beating 48 times a minute. He was symptom-free 24 hours later. In Vermont, authorities warn that most people who eat it need hospital care.

Lily of the valley, the garden plant that escapes

Lily of the valley is an ornamental plant, but it has naturalized across much of eastern North America, including Quebec. It's found near cemeteries, gardens, along roadsides and in thickets, where its rhizomes form dense carpets. Its leaves are 15 to 40 cm long, and two, sometimes three, surround a stem of small, fragrant white bells.

It's toxic: it contains cardiac glycosides, substances that act on the heart. Lily of the valley can cause diarrhea and vomiting and, in rare severe cases, heart rhythm disorders.

A telltale clue: wild leek flowers in late June and July, when its leaves have already disappeared. A plant with white bells among its leaves in spring is therefore not wild leek.

Trout lily and bluebead lily: false leads

Two plants of our forests also have leaves that recall those of wild leek: trout lily and bluebead lily. The Quebec government gives two clues: trout lily leaves are mottled with brown, and bluebead lily leaves have a fringed edge. Above all, neither smells nor tastes of garlic. If you find them, leave them be.

If someone ate some

• Call the Centre antipoison du Québec at 1-800-463-5060. The service is free and open day and night. Don't wait for symptoms: with false hellebore, they can affect the heart.
• Dial 911 in case of a serious reaction, such as fainting or a very slow pulse.
• Keep a sample of the plant or take a photo of it: it helps identify it.

Before eating your harvest: the checklist

• Every leaf smells of garlic when you crush it, and your hands were clean.
• The leaves are flat, smooth, without pleats, and rise straight from the ground.
• The leaf stalk is greenish or reddish purple, and there are no flowers among the leaves.
• The patch grows in a maple forest, not in a marsh.
• You picked leaf by leaf, never by the handful.
• At the slightest doubt, you don't eat it.

For the picking rules, the amounts allowed and the places where it's prohibited, see our guide to picking wild leek in Quebec. Once your harvest is properly identified, try our wild leek pesto. And our Quebec foraging calendar shows, month by month, the toxic look-alike of each plant.

Sources

• Plantes et champignons toxiques du Québec (in French), Centre antipoison du Québec, 2022.
• Plantes toxiques chez nous? Recommandations (in French), Centre antipoison du Québec, 2017.
• Ail des bois (in French), Government of Quebec, 2026.
• State officials warn Vermonters about false hellebore, Vermont Department of Health, 2021.
• Health officials warn Vermonters about false hellebore, Vermont Department of Health, 2023.
• Convallaria majalis var. majalis, Flora of North America.
• Wild garlic: confusion often leads to poisoning, German Federal Institute for Risk Assessment (BfR), 2023.
• Odour test with pitfalls: what to look out for when collecting wild garlic, German Federal Institute for Risk Assessment (BfR), 2025.
• Confusion entre colchique et ail des ours (in French), Anses, 2025.
• Yorick Ferrez, Plantes toxiques (in French), La Terre de chez nous, 2024.
• Intoxications : attention à ne pas confondre l'ail des ours et le muguet (in French), Pourquoi docteur, based on the Agence régionale de santé Grand Est, 2024.