The document summarizes the Island/Coastal Morning-glory, a native perennial vine found along the central and southern California coast. It is a drought-deciduous, half-woody vine that can grow 20-30 feet long, climbing over shrubs and trees. It produces attractive, trumpet-shaped white and pink-purple flowers from March to fall. The vine provides excellent habitat for birds and can be used in gardens to cover arbors, pergolas, walls, and fences. It prefers full sun to part shade and well-drained soil, and requires only occasional water once established.

1. Island/Coastal Morning-glory – Calystegia macrostegia
(kal-i-STEE-jee-uh mak-ro-STEE-jee-a)
Family: Convolvulaceae (Morning-glory Family)
Native to: Local subspecies (ssp. amplissima ; cyclostegia ; intermedia) endemic (limited) to
Central & S. Coast of CA, Channel Islands & mountain ranges near S. Coast; rocky areas & canyon
walls of coastal scrub, chaparral, coastal sage scrub, elevations < 1000 ft.
half-woody perennial vine
mature length: 20-30 ft.
Attractive, spreading perennial vine with heart-shaped leaves. Climbs over and through shrubs and
trees. Individual stems & foliage are dainty, but massed are impressive. Drought-deciduous.
Growth characteristics:
Blooms March to fall, depending on ssp. Flowers are typical of Morning Glory
family: open, trumpet-shaped with fused petals. Flowers white tinged with pink-purple. Extremely
showy, with many flowers at one time. Flowers close at night.
Blooms/fruits:
Uses in the garden: Can be used for any use appropriate to perennial vines. Looks great climbing
over arbor or pergola. Can be used to mask wall and fences.
well in western L.A. county, particularly along the coast.
Cultivar ‘Anacapa Pink’ does very
Sensible substitute for: Non-native vines, including non-native Morning Glory.
Attracts: Excellent bird habitat: provides cover and seeds for food.
Requirements:
Element
Sun
Soil
Water
Fertilizer
Other
Requirement
Full sun (coastal) to part-shade; afternoon shade best in very hot gardens.
Most local soils
Zone 2 to 2-3; occasional water
Not needed
Prune to manage (it has tendency to get out of hand!). Do not prune back into old
wood – may kill it. Prune late fall or winter. Will re-seed.
Management:
Propagation: from seed:
warm water soak; fall/winter
by cuttings: probably
Plant/seed sources (see list for source numbers): 1, 8, 10, 13, 14, 16, 20, 21
8/31/08
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