Coast Morning Glory
Calystegia macrostegia
Last reviewed: June 2026
Coast Morning Glory (Calystegia macrostegia) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org, last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part sun
Water
low
Size
36"–240" H × 36"–240" W
Bloom
Apr, May, Jun, Jul
Native to
CA
Pollinators
bees, butterflies, hummingbirds
Browse plants for this ecoregion
Calystegia macrostegia (Island Morning Glory) is a climbing or sprawling perennial vine native to coastal regions. It features heart-shaped leaves and large, showy white to pale pink funnel-shaped flowers that bloom from spring through summer. This drought-tolerant vine can spread extensively when given space.
In an HOA neighborhood
Coast Morning Glory takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Extremely vigorous growth can appear unkempt
- Can climb and overwhelm nearby structures and plants
- Often considered too wild-looking for formal landscapes
Wildlife value
Host plant for white-lined sphinx moth.
Excellent pollinator plant that attracts bees, butterflies, and hummingbirds. The trumpet-shaped blooms provide nectar throughout the growing season.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Coast Morning Glory fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.