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Helenium puberulum
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Sneezeweed
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Helenium puberulum
  

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About Sneezeweed (Helenium puberulum) Helenium puberulum is a species of flowering plant in the daisy family known by the common name rosilla. It is native to California and Baja California, where it can be found in moist habitats such as riverbanks and meadows. This is an annual or perennial herb varying in size and shape from a low stem with few branches to an erect, spindly stem nearing 1.5 meters tall. Most of the leaves are on the lower part of the plant, with the upper occupied by naked peduncles bearing flower clusters of several daisylike flower heads. Each head is mainly a spherical bunch of disc florets which are yellow when new and darken with age. Some heads also have a few to many yellow ray florets. The fruit is a hairy achene one to two millimeters long.
Plant Description
Plant Type
Perennial herb

Max. Height
5 ft (1.5 m)

Flower Color
Yellow, Cream

Flowering Season
Summer
Spring
Summer
Fall
Winter


Native Status
Native

Natural Setting
Site Type
Streamsides, marshes, wetlands

Sun
Sun

Elevation ?
-87' - 14090'

Annual Precip. ?
5.9" - 86.0"

Summer Precip. ?
0.15" - 3.85"

Coldest Month ?
10.8° F - 55.7° F

Hottest Month ?
34.1° F - 79.9° F

Humidity ?
0.05 vpd - 29.10 vpd

Soil Description
Prefers sand but tolerates garden soil

Drainage
Fast, Medium, Standing

Landscaping Information
Water Requirement ?
Moderate - High
Extremely Low
Very Low
Low
Moderate - High


Propagation ?
For propagating by seed: No treatment. (Emery and Frey 1971).

Common uses
Bogs and Ponds, Butterfly Gardens, Bee Gardens

Nursery Availability
Commonly Available

Other Names
Common Names
Rosilla


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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