Bigelow'S Sneezeweed

helenium bigelovii

Bigelow's Sneezeweed is a cheerful, moisture-loving perennial wildflower native to the damp meadows, marshes, and riparian zones of western North America, especially in California and Oregon. Belonging to the aster family, this plant is celebrated for its striking, daisy-like yellow flowers that brighten wetland landscapes from mid to late summer. It plays a critical ecological role, serving as a vital nectar source for a variety of native pollinators, including bees and butterflies. Despite its name, it is a pleasant sight for hikers and nature enthusiasts rather than a nuisance.

Habitat: Found in wet montane meadows, fens, bogs, and along stream banks.

Appearance

This erect herb typically grows between 30 and 100 centimeters tall, featuring lance-shaped, alternate green leaves that merge into distinctively 'winged' stems. Each stem is topped with one or more vibrant flower heads, characterized by a prominent, spherical, yellowish-brown central dome surrounded by 13 to 30 drooping yellow ray petals. The unique, globe-like center of the flower becomes increasingly dark and textured as it matures, making it easy to identify.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderAsteralesFamilyAsteraceaeGenusHelenium

Photo: Brian FinzelCC BY-SA 4.0 · iNaturalistView original ↗

Bigelow'S Sneezeweed

Interesting facts

The common name 'sneezeweed' comes from a historic practice where the dried, powdered leaves were used as snuff to induce sneezing and clear the head.

The toxic chemical helenalin found in the plant has been studied for its potential anti-inflammatory and anti-tumor properties.

Unlike many other wildflowers, the pollen of Bigelow's Sneezeweed is heavy and sticky, meaning it does not cause seasonal wind-borne allergies.

Special abilities

Possesses specialized root adaptations that prevent rot and allow efficient gas exchange in waterlogged, anaerobic soils.

Produces bitter-tasting sesquiterpene lactones like helenalin to discourage grazing by mammalian herbivores.

Features a specialized spherical dome layout of florets that maximizes pollen production and structural support for visiting insects.

Measurements & details

Length: 30+ cm
Lifespan: 2+ years

Diet & Feeding

As a photosynthetic plant, Bigelow's Sneezeweed converts sunlight, water, and carbon dioxide into energy while absorbing key soil nutrients.

Primary Foods

Sunlight
Water
Carbon dioxide
Soil nitrogen
Phosphorus

Ecological connections

Mutualism

Yellow-faced Bumble Bee

Bombus vosnesenskii

Utilizes the plant's nectar and pollen, acting as a primary pollinator.

Eaten by

Mule Deer

Odocoileus hemionus

Occasionally browses the foliage despite the bitter defensive chemicals.

Traits

No trait badges are assigned for this object yet.

Also known as

No aliases listed yet.

Collections

Collections for this object will appear here as more themes are added.

Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Bigelow'S Sneezeweed?

Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details.

How long is Bigelow'S Sneezeweed?

30+ cm

How long does Bigelow'S Sneezeweed live?

2+ years

What does Bigelow'S Sneezeweed eat?

As a photosynthetic plant, Bigelow's Sneezeweed converts sunlight, water, and carbon dioxide into energy while absorbing key soil nutrients.

Where is Bigelow'S Sneezeweed usually found?

Found in wet montane meadows, fens, bogs, and along stream banks.