• Photo of Helenium (Heleniums)

Plant Profile: Helenium

Taxonomy: Helenium

Names

Sneezeweed

  • Photo of Helenium (Heleniums)

Phonetic Spelling:hel-EN-ee-um

Genus:Helenium

Species:

Family:Asteraceae

Helenium is a group of flowering plants that includes both annuals and herbaceous perennials, characterized by their vibrant daisy-like blooms in shades of yellow or orange to red. The name of this genus pays homage to Helen of Troy.

However, there are some potential issues to be aware of, such as powdery mildew, leaf spot, and rust. Additionally, during strong winds or heavy rainfall, the stems may require additional support.

Helenium Feature Summary

Helenium Image Gallery

Tags

#yellow
#poisonous
#weedy
#riparian
#cottage garden
#wetlands
#stream banks
#pastures
#thickets
#native garden
#wildflower garden
#butterfly friendly
#HS302
#bog gardens

Similar Plants

Helenium Feature Summary

Attributes
Powdered leaves and flower heads were used in the treatment of colds and congestion by inducing sneezing. Indians used an infusion of the leaves as a laxative.
Eastern US and Canada, Midwest and Gulf States
Food plant of butterfly larvae
Perennial
Annual
Flowers
Yellow, in convex heads with 3-lobed ray flowers.
Gold/Yellow
Orange
7 - 20 petals/rays
1-3 inches
Leaves
Alternate, simple, glandular-dotted
Lanceolate
Poisonous to Humans
TOXIC ONLY IF LARGE QUANTITIES EATEN. Salivation, elevated temperature and pulse, vomiting, convulsions, and difficulty in breathing,
Sesquiterpene lactone
Seeds
Leaves
Stems
Flowers
Whole Plant Traits
Annual
Herbaceous Perennial
Native Plant
Poisonous
Wildflower
Multi-stemmed
Erect
Clumping
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Good Drainage
Moist
Occasionally Wet
Coastal
Mountains
Piedmont
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
3a
3b
9a
9b
High Organic Matter
Landscape
Butterfly Garden
Pollinator Garden
Rain Garden
Cottage Garden
Native Garden
Mass Planting
Naturalized Area
Slope/Bank
Riparian
Butterflies
Bees
Poisonous to Humans
Weedy

Helenium Attributes

Helenium: Uses (Ethnobotany)

Powdered leaves and flower heads were used in the treatment of colds and congestion by inducing sneezing. Indians used an infusion of the leaves as a laxative.

Helenium: Country Or Region Of Origin

USA

Helenium: Distribution

Eastern US and Canada, Midwest and Gulf States

Helenium: Wildlife Value

Food plant of butterfly larvae

Helenium: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Helenium: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Helenium Flowers

Helenium: Flower Description

Yellow, in convex heads with 3-lobed ray flowers.

Helenium: Flower Color

filter_vintage
Gold/Yellow
filter_vintage
Orange

Helenium: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Helenium: Flower Bloom Time

Winter
Spring
Summer
Fall

Helenium: Flower Petals

2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals

Helenium: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Helenium: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Helenium Leaves

Helenium: Leaf Description

Alternate, simple, glandular-dotted

Helenium: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Helenium: Leaf Color

spa
Green

Helenium: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Helenium: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Helenium: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Helenium: Hairs Present

No
Yes

Helenium Poisonous to Humans

Helenium: Poison Symptoms

TOXIC ONLY IF LARGE QUANTITIES EATEN. Salivation, elevated temperature and pulse, vomiting, convulsions, and difficulty in breathing,

Helenium: Poison Toxic Principle

Sesquiterpene lactone

Helenium: Poison Severity

High
Low
Medium

Helenium: Causes Contact Dermatitis

No
Yes

Helenium: Poison Part

Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems

Helenium Whole Plant Traits

Helenium: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Helenium: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Helenium: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Helenium: Growth Rate

Slow
Medium
Rapid

Helenium: Maintenance

Low
Medium
High

Helenium Cultural Conditions

Helenium: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Helenium: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Helenium: NC Region

Coastal
Mountains
Piedmont

Helenium: USDA Plant Hardiness Zone

thermostat
3a
thermostat
3b
thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b
thermostat
9a
thermostat
9b

Helenium: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Helenium Stem

Helenium: Stem Is Aromatic

No
Yes

Helenium Landscape

Helenium: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Helenium: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Helenium: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Helenium: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Helenium: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees

Helenium: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy