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Wasowski, Sally and Andy
Calystegia macrostegia (Greene) Brummitt
Island false bindweed, Woody morning glory, Island morning glory, California morning glory
USDA Symbol: cama24
USDA Native Status: Native to U.S.
Native from southwestern California to nearby Baja California, along the coast and in adjacent chaparral, this long-blooming, perennial morning glory with large white to pale pink flowers can climb to thirty feet and is ideal for arbors, pergolas, and fences within its range. It is also useful as a slope-stabilizing groundcover for full sun, as long as it receives coastal quantities of moisture during the summer. Its vivid green, triangular leaves are carried on twining stems that emerge from a woody base called a caudex, hence the common name Woody Morning Glory. Several varieties are recognized, with those from islands often preferred for horticulture, as they have more prominent leaves.
Bloom InformationBloom Color: White , Pink
Bloom Notes: Color white or pale pink
CA Native Distribution:
Coastal and island southwestern California south to adjacent Baja California Native Habitat:
Open coastal habitats and nearby chaparral USDA Native Status: L48(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Dry , Moist
Soil pH: Circumneutral (pH 6.8-7.2)
Soil Description: Well drained, rocky granite, sand, or clay loam soils of variable organic content, pH 6 to 8
Conditions Comments: Does best in full sun in moist, coastal areas. In drier sites, give afternoon shade. May defoliate during summer droughts, so water during dry spells.
BenefitUse Ornamental: Long-blooming white or muted pink flowers and lush, vigorous foliage for trellises, arbors, pergolas, fences
Use Wildlife: Butterflies visit flowers
Conspicuous Flowers: yes
Interesting Foliage: yes
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
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Record Modified: 2009-11-30
Research By: GDG