Death Camas

The lethal look-alike behind two of foraging's absolute rules: it grows with edible camas and wild onions, its bulb is indistinguishable from theirs, and it has no onion smell.

How to recognize it: grass-like folded leaves with NO onion smell, and a dense spike of cream-white star flowers - never blue.

You must never grow, dig, or gather death camas — the purpose here is recognition. It emerges early in spring as a clump of narrow, folded, V-channelled grass-like leaves rising from an underground bulb, typically 8 to 28 inches tall in flower. In late spring it produces a dense raceme of small cream to greenish-white six-parted star flowers, each carrying a green or yellowish gland at the base of the petal. The bulb is oval, dark-coated, and onion-like — but odorless.

Against blue camas: the flower is the only dependable separator. Camassia flowers are blue to deep violet; death camas flowers are cream-white. The two grow intermingled in the same wet-then-dry meadows, and their bulbs cannot be told apart by eye, size, or coat. This is why the traditional practice — and the only safe modern one — is to identify camas while it is in bloom, mark the blue-flowered plants, and dig only those, later.

Against wild onion and wild garlic: use smell. Crush a leaf or scrape the bulb: a true wild Allium smells strongly and unmistakably of onion or garlic. Death camas has no onion smell at all. Never rely on leaf shape — death camas leaves are flat and solid, just like meadow garlic's. If there is no onion smell, it is not a wild onion, and you do not eat it.

There is no care - only avoidance. Leave wild stands alone in native range, keep livestock off in early spring, and never handle bulbs casually.

Death camas is a native wildflower, and away from people and grazing animals it belongs where it grows — it is not a weed to eradicate on sight. Managing it is about separation, not removal.

Where it matters is pasture and range. Death camas greens up before most forage, so hungry stock eat it when nothing else is available; sheep are especially vulnerable, and losses cluster in early spring and on overgrazed ground. The practical control is grazing management: keep animals off known stands until other forage is up, and avoid turning hungry animals onto infested range.

In a home setting, if a stand sits where children or pets play, dig it out wearing gloves, bag the bulbs, and dispose of them in the trash — never compost them and never leave dug bulbs lying where they might be mistaken for onions. Wash your hands afterwards. Do not burn it in a pile you will stand over.

What poisoning looks like, and what to do: symptoms start within an hour or so, and any suspected ingestion is an emergency.

Suspected ingestion is a medical emergency. Call poison control or emergency services immediately — do not wait for symptoms to develop, and do not try to treat it at home.

Symptoms typically begin within about an hour and often start with excessive salivation, nausea and persistent vomiting, followed by weakness, confusion, a slowed heart rate and a marked drop in blood pressure. There is no specific antidote; treatment is urgent supportive hospital care. Small amounts of bulb have caused serious poisoning, and children are at greater risk for their size.

“I think I dug the wrong bulb.” Do not taste it to check — tasting is how people get poisoned. Throw out the entire batch. A single misidentified bulb contaminates everything it was gathered with, and you cannot sort them afterwards.

Pets and livestock: the same plant, the same danger. Contact a veterinarian immediately if an animal has grazed a known stand.

The plant that shadowed one of North America's great food crops - and taught the bloom-time rule that still governs camas harvest.

Camas was a staple food across the Pacific Northwest and Intermountain West for thousands of years — bulbs dug in quantity and slow-roasted in pits for days into something sweet and storable. Death camas grew in the very same meadows, and Indigenous harvesters managed the risk with a practice that remains the correct one today: identify and mark the plants in bloom, when blue is unmistakably blue, and dig only those bulbs afterwards. Some camas grounds were actively weeded of death camas over generations.

Newcomers who did not know the rule paid for it. Members of the Lewis and Clark expedition were sickened after eating camas, and death-camas poisoning of both settlers and their livestock is documented through the 19th century. It remains one of the most significant poisonous plants on western rangeland, killing sheep in particular most springs.

The genus name changed relatively recently — most older books and many nursery and foraging sources still say Zigadenus, so both names are worth knowing when you read about it.

A plant of western meadows and sagebrush steppe, from lowland prairie to mountain slopes - and related species reach much further east.

Toxicoscordion venenosum is a plant of western North America, from British Columbia south into California and east through the Rockies — dry to seasonally moist meadows, grassy hillsides, sagebrush steppe, and open pine woodland, from sea level to subalpine. It thrives on ground that is wet in spring and dry by summer, which is exactly the ground edible camas likes, and exactly why they grow together.

Related death camas species extend the hazard well beyond that range: Nuttall's death camas across the southern Great Plains and Ozarks, foothill death camas through the interior West, and others in the Southeast. If you forage wild bulbs anywhere in North America, treat every pale-flowered, grass-leaved bulb plant as a possible death camas until proven otherwise.