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Grindelia hirsutula (Gumweed)
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Grindelia hirsutula
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Gumweed
( Grindelia hirsutula )
Grindelia hirsutula
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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22 Nurseries Carry This Plant
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About Gumweed (Grindelia hirsutula)
22 Nurseries Carry This Plant
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Grindelia hirsutula
is a North American species of flowering plant in the daisy family known by the common names hairy gumplant and hairy gumweed.
Grindelia hirsutula
is native to North America, widespread across Canada and in California and Oregon. The species is highly variable, and many local populations have been named as varieties or as distinct species. All these taxa do, however, intergrade with one another.
Grindelia hirsutula
is an erect perennial herb or subshrub sometimes as much as 250 cm (100 inches or 8 1/3 feet) tall but usually much shorter. The plant is usually green but the stems are often red or purplish-brown and the leaves can be somewhat yellowish to reddish. The plant can produce numerous flower heads in branching arrays at the top of the plant. Each head is 2 or 3 centimeters (0. 8-1. 2 inches) wide with hemispheric cups of greenish phyllaries around the base, the bracts claw-like and bent away from the flowers. The center of the head is filled with many small yellow disc florets surround by numerous golden ray florets. The head produces a thick white exudate, especially in new flower heads. Varieties:
Grindelia hirsutula
var. maritima - San Francisco Gum Plant, San Francisco gumplant, coastal gumweed; endemic to coastal California in the San Francisco Bay Area.
Tolerant of recycled water.
Plant Description
Plant Type
Perennial herb
Size
5 - 8.2 ft tall
Flower Color
Yellow, Purple, Red, Brown
Flowering Season
Summer, Fall
Landscaping Information
Sun
Full Sun
Moisture
Low
Nurseries
Carried by 22
Ease of Care
Moderately Easy
Soil Drainage
Fast, Medium, Slow
Common uses
Deer Resistant, Butterfly Gardens
Sunset Zones
?
5, 14, 15*, 16*, 17*, 19, 20, 21, 22*, 23*, 24*
Natural Setting
Site Type
Sandy or clay places, slopes
Alternative Names
Botanical Names
: Grindelia hirsutula var. hirsutula
Common Names
: Coastal Gumweed, Hairy Gumplant, Hairy Gumweed, San Francisco Gumplant
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Gumweed
Grindelia hirsutula
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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