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Eriogonum giganteum
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St. Catherine's Lace
( Eriogonum giganteum )
Eriogonum giganteum
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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74 Nurseries Carry This Plant
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About St. Catherine's Lace (Eriogonum giganteum)
74 Nurseries Carry This Plant
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St. Catherine's lace (
Eriogonum giganteum
) is large and showy buckwheat endemic to the Channel Islands of California. It flowers densely, in carpets of clustered tiny pinkish white flowers. Young flower heads are white and lacy, gradually turning to warm, reddish brown over the summer. This plant is fast-growing and variable in size, from 2 feet tall and wide to a sprawling or rounded bush over 9 feet high and wide. One variety, the Santa Barbara Island buckwheat, is particularly rare so should not be planted next to wildlands, especially in areas where it can hybridize with natural populations of cross-compatible species of Eriogonum.
In the garden, the plant likes fast-draining, preferably rocky, soil and regular water until it is established. It is clay tolerant when drainage is fast. It grows in full sun and adapts to high inland temperatures but does not do well in frost. Cut back after bloom.
The UC Davis Arboretum named this wildlife-friendly plant one of its "All-Stars" for use in California landscapes. It supports honey bees, native bees, birds and small mammals and hosts a likely total of 12 species of butterfly and moths.
Plant Description
Plant Type
Shrub
Size
1.6 - 5 ft tall
4 - 10 ft wide
Form
Mounding, Rounded
Growth Rate
Fast
Dormancy
Evergreen, Winter Semi-Deciduous
Flower Color
Cream, Pink, White
Flowering Season
Spring, Summer, Fall
Wildlife Supported
Butterflies, honey bees, native bees, birds and small mammals
Butterflies & moths hosted ( 1
confirmed
, 12
likely
* )
SHOW ALL
Avalon Hairstreak
Strymon avalona
Strymon avalona
*
Gray Hairstreak
Strymon melinus
Strymon melinus
*
Acmon Blue
Icaricia acmon
Icaricia acmon
*
Dotted Blue
Euphilotes enoptes
Euphilotes enoptes
*
Bramble Hairstreak
Callophrys dumetorum
Callophrys dumetorum
*
White-lined Sphinx
Hyles lineata
Hyles lineata
*
Brown Arches Moth
Lacinipolia stricta
Lacinipolia stricta
Landscaping Information
Sun
Full Sun
Moisture
Very Low
Summer Irrigation
Max 1x / month once established
Nurseries
Carried by 74
Ease of Care
Very Easy
Cold Tolerance
Tolerates cold to 15 - 25° F
Soil Drainage
Fast
Soil Description
Rocky, gravelly. Soil PH: 6.0 - 8.0
Common uses
Bank Stabilization, Deer Resistant, Bird Gardens, Butterfly Gardens, Bee Gardens
Companion Plants
Trees:
Island Ironwood
(
Lyonothamnus floribundus
ssp. asplenifolius),
Island Cherry
(
Prunus ilicifolia
ssp. lyonii),
Island Oak
(
Quercus tomentella
) Shrubs and herbs:
Island Ceanothus
(
Ceanothus arboreus
),
California Encelia
(
Encelia californica
),
Island Alumroot
(
Heuchera maxima
),
Santa Rosa Island Sage
(
Salvia brandegeei
), Manzanita (
Arctostaphylos species
),
Dudleya species
,
Yucca species
Maintenance
Pinch back rapidly-growing stem tips to increase the plant's density. Deadhead the spent flower stalks. (Remember to harvest mature seeds of some flower heads, if desired.)
Propagation
?
Self seeds. Hybridizes with E. arborescens and E. fasciculatum. The hybrid of E. giganteum and E. arborescens is sold as Eriogonum blissianum. For propagating by seed: No treatment.
Natural Setting
Site Type
Dry rocky places as part of coastal sage scrub or chaparral, primarily on the Channel Islands
Climate
Annual Precipitation: 7.9" - 17.9", Summer Precipitation: 0.15" - 0.30", Coldest Month: 49.2" - 57.4", Hottest Month: 64.4" - 73.3", Humidity: 1.45" - 17.87", Elevation: -215" - 1650"
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St. Catherine's Lace
Eriogonum giganteum
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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