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Sawtooth Goldenbush
( Hazardia squarrosa )
Hazardia squarrosa
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Sawtooth Goldenbush (Hazardia squarrosa)
7 Nurseries Carry This Plant
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Hazardia squarrosa
is a species of shrub in the Asteraceae (Sunflower) family known by the common name Sawtooth Goldenbush. It is native to California and Baja California, where it grows in coastal and inland scrub and chaparral habitats from Monterey County southward. This is a shrub of variable size, from low and clumpy to sprawling over two meters tall. It is covered in thick, sharply toothed leaves a few centimeters long and is generally not very hairy or woolly. It bears discoid flower heads covered in greenish, pointed phyllaries and opening into an array of long yellow to slightly reddish disc florets and no ray florets. There are three recognized varieties with largely overlapping ranges. In the garden it provides long lasting summer color and is popular with many insects including butterflies. Also valuable in restoration projects.
Plant Description
Plant Type
Shrub
Size
4 - 8 ft tall
8 ft wide
Dormancy
Summer Semi-Deciduous
Flower Color
Yellow, Green
Flowering Season
Summer, Fall
Wildlife Supported
Insects, including butterflies
Butterflies & moths hosted ( 1
confirmed
, 2
likely
* )
SHOW ALL
Isophrictis magnella
Isophrictis magnella
*
Gabb's Checkerspot
Chlosyne gabbii
Chlosyne gabbii
*
Cucullia incresa
Cucullia incresa
Landscaping Information
Sun
Full Sun, Part Shade
Moisture
Very Low, Low
Summer Irrigation
Max 1x / month once established
Nurseries
Carried by 7
Ease of Care
Very Easy
Cold Tolerance
Tolerates cold to 5° F
Soil Drainage
Fast, Medium, Slow
Soil Description
Tolerates clay soil but is more commonly found on sandy soils. Soil PH: 6.0 - 8.0
Common uses
Bird Gardens
Companion Plants
Use with Sagebrush (
Artemisia californica
or palmeri), Viguiera (
Bahiopsis laciniata
),
Dudleya sp.
,
Brittlebush
(
Encelia californica
),
Buckwheat
(
Eriogonum sp.
), Yucca (Herpero
Yucca whipplei
or Yucca shidigera),
Lupine
(
Lupinus sp.
),
Sticky Monkeyflower
(
Mimulus aurantiacus
),
Bladderpod
(
Peritoma arborea
),
Scrub Oak
(
Quercus dumosa
or berberidifolia), Sage (
Salvia sp.
), and various cactus species.
Natural Setting
Site Type
Flats and canyon bottoms
Climate
Annual Precipitation: 4.0" - 74.1", Summer Precipitation: 0.14" - 2.82", Coldest Month: 33.5" - 56.8", Hottest Month: 57.7" - 87.2", Humidity: 0.77" - 38.18", Elevation: -30" - 7419"
Alternative Names
Common Names
: Saw-toothed Goldenbush, Sawtooth Bristleweed
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Sawtooth Goldenbush
Hazardia squarrosa
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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