Plantae > Tracheophyta > Magnoliopsida > Asterales > Asteraceae > Helenium > Helenium autumnale

Helenium autumnale (common sneezeweed)

Synonyms:

Wikipedia Abstract

Helenium autumnale is a North American species of flowering plants in the sunflower family. Common names include common sneezeweed and large-flowered sneezeweed.
View Wikipedia Record: Helenium autumnale

Infraspecies

Helenium autumnale var. grandiflorum
Helenium autumnale var. pubescens

Attributes

Allergen Potential [1]  High
Screening - Summer [2]  Moderate
Screening - Winter [2]  Porous
Bloom Period [2]  Fall
Drought Tolerance [2]  Low
Fire Tolerance [2]  None
Flower Type [3]  Hermaphrodite
Frost Free Days [2]  3 months 10 days
Fruit/Seed Abundance [2]  Medium
Fruit/Seed Begin [2]  Fall
Fruit/Seed End [2]  Fall
Growth Form [2]  Single Stem
Growth Period [2]  Spring, Summer
Growth Rate [2]  Rapid
Hazards [3]  The plant is poisonous to ruminants; Contact with the plant might cause dermatitis in sensitive people;
Leaf Type [2]  Deciduous
Lifespan [3]  Perennial
Pollinators [3]  Bees, Lepidoptera
Propagation [2]  Bare Root, Seed
Regrowth Rate [2]  Slow
Root Depth [2]  6 inches (15 cm)
Seed Spread Rate [2]  Rapid
Seed Vigor [2]  High
Seeds Per [2]  1464513 / lb (3228701 / kg)
Shape/Orientation [2]  Erect
Structure [4]  Herb
Usage [3]  The plant contains helenalin, a compound that has insecticidal properties, though it is also toxic to fish and worms;
Vegetative Spread Rate [2]  None
Flower Color [2]  Yellow
Foliage Color [2]  Green
Fruit Color [2]  Brown
Flower Conspicuous [2]  Yes
Height [3]  5.904 feet (1.8 m)
Width [3]  20 inches (0.5 m)
Hardiness Zone Minimum [2]  USDA Zone: 2 Low Temperature: -50 F° (-45.6 C°) → -40 F° (-40 C°)
Light Preference [2]  Full Sun
Soil Acidity [2]  Moderate Acid
Soil Fertility [2]  Infertile
Water Use [2]  Moderate
View Plants For A Future Record : Helenium autumnale

Protected Areas

Predators

Nathalis iole (Dwarf yellow)[5]

Providers

External References

USDA Plant Profile

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1Derived from Allergy-Free Gardening OPALS™, Thomas Leo Ogren (2000)
♦ 2USDA Plants Database, U. S. Department of Agriculture
♦ 3Plants For A Future licensed under a Creative Commons Attribution 4.0 License
♦ 4Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 5Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 6Robertson, C. Flowers and insects lists of visitors of four hundred and fifty three flowers. 1929. The Science Press Printing Company Lancaster, PA.
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0