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Deinandra increscens
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Grassland Tarweed
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Deinandra increscens

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About Grassland Tarweed (Deinandra increscens) Deinandra increscens is a species of flowering plant in the aster family known by the common name grassland tarweed. It is endemic to California, where it has been found primarily in Monterey, San Luis Obispo and Santa Barbara Counties (including Santa Cruz and Santa Rosa Islands). A few isolated populations have been reported from Kern and Merced Counties, but these are from urban areas (Cities of Merced and Bakersfield) and probably represent cultivated specimens. Deinandra increscens is an annual up to 100 cm (40 inches) tall. It has numerous flower heads, often tightly clumped together, each with yellow ray florets and disc florets with yellow corollas but red or purple anthers.
Plant Description
Plant Type
Annual herb

Max. Height
3.3 ft (1 m)

Flower Color

Native Status

Natural Setting
Elevation ?
-228' - 3193'

Annual Precip. ?
11.8" - 46.1"

Summer Precip. ?
0.14" - 0.39"

Coldest Month ?
45.7° F - 54.6° F

Hottest Month ?
59.1° F - 75.1° F

Humidity ?
0.47 vpd - 22.35 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Gaviota Tarplant

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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