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Calystegia macrostegia
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Island Morning Glory
( Calystegia macrostegia )
Calystegia macrostegia
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Island Morning Glory (Calystegia macrostegia)
20 Nurseries Carry This Plant
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Calystegia macrostegia
is a species in the Convolvulaceae (Morning Glory) family known by the common name Island Morning Glory. It is found on the Channel Islands and also on the mainland coast from Monterey County southward into Baja, Mexico. It is a woody perennial vine which may be a low and herbaceous or a stout, climbing plant which can approach 9 meters in length. The triangular leaves may be over 10 centimeters wide. It blooms over a long period, producing white to very pale pink blooms with corollas 2 to over 6 centimeters wide.
There are six recognized subspecies with overlapping ranges. There is also a commonly available horticultural variety known as 'Anacapa Pink'. It works best with a fence, trellis or something it can climb on, but can also be used as a ground cover. It grows so vigorously that it may need to be cut back annually. Plant in full sun along the coast. Inland give afternoon shade and additional water.
Plant Description
Plant Type
Perennial herb, Shrub, Vine
Size
1 ft tall
20 - 30 ft wide
Form
Spreading
Growth Rate
Fast
Dormancy
Summer Semi-Deciduous
Flower Color
Pink, White
Flowering Season
Winter, Spring, Summer
Wildlife Supported
Butterflies & moths hosted ( 1
confirmed
, 2
likely
* )
SHOW ALL
Orange Tortrix Moth
Argyrotaenia franciscana
Argyrotaenia franciscana
*
Morning-glory Plume Moth
Emmelina monodactyla
Emmelina monodactyla
*
Yellowstriped Armyworm Moth
Spodoptera ornithogalli
Spodoptera ornithogalli
Landscaping Information
Sun
Full Sun
Moisture
Very Low
Summer Irrigation
Max 1x / week once established
Nurseries
Carried by 20
Ease of Care
Very Easy
Cold Tolerance
Tolerates cold to 10° F
Soil Drainage
Fast, Medium
Soil Description
Typically sandy and/or rocky soil. Soil PH: 6.0 - 8.0
Common uses
Groundcovers, Bee Gardens
Companion Plants
Island companion plants include Santa Cruz
Island Ironwood
(
Lyonothamnus floribundus
ssp. asplenifolius),
Island Live Oak
(Quercus tometella),
Catalina Cherry
(
Prunus ilicifolia
ssp. lyonii),
Island Bristleweed
(
Hazardia detonsa
),
Redflower Buckwheat
(
Eriogonum grande
var. rubescens),
Island Snapdragon
(
Gambelia speciosa
), and
Giant Coreopsis
(
Leptosyne gigantea
). Other chaparral and sage scrub companions include
California Encelia
(
Encelia californica
),
California Sagebrush
(
Artemisia californica
),
Bladderpod
(
Peritoma arborea
), and
Ceanothus
spp.
Maintenance
Prune in winter to control spread and encourage new growth and flowering
Natural Setting
Site Type
Dry, rocky places typically near the coast but sometimes in interior mountains and canyons
Climate
Annual Precipitation: 3.7" - 52.0", Summer Precipitation: 0.14" - 1.89", Coldest Month: 34.9" - 57.6", Hottest Month: 58.2" - 86.2", Humidity: 0.60" - 37.19", Elevation: -2547" - 6450"
Alternative Names
Common Names
: Island False Bindweed, Island Morning-glory
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Island Morning Glory
Calystegia macrostegia
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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