North America Native Plant

Coast Range False Bindweed

Botanical name: Calystegia collina oxyphylla

USDA symbol: CACOO

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Coast Range False Bindweed: A Rare California Native Worth Knowing Meet the coast range false bindweed (Calystegia collina oxyphylla), a charming California native that might just be the hidden gem your garden has been waiting for. This perennial herb belongs to the morning glory family and offers gardeners a chance ...

Rare plant alert!

Region: Conservation status by state

Status: S4T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Coast Range False Bindweed: A Rare California Native Worth Knowing

Meet the coast range false bindweed (Calystegia collina oxyphylla), a charming California native that might just be the hidden gem your garden has been waiting for. This perennial herb belongs to the morning glory family and offers gardeners a chance to support local ecosystems while adding a touch of wildflower beauty to their landscape.

What Makes This Plant Special?

Coast range false bindweed is a true California original, found exclusively in the Golden State. As a native forb herb, it represents the kind of plant that once carpeted California’s natural landscapes before development changed the scenery. Unlike its woody shrub neighbors, this perennial lacks significant woody tissue and instead puts its energy into beautiful seasonal growth that returns year after year.

Where You’ll Find It Growing Wild

This native beauty calls California home, specifically thriving in the state’s diverse coastal and inland regions. Its distribution reflects California’s unique Mediterranean climate and varied topography.

A Word About Rarity

Here’s something important to know: coast range false bindweed has a Global Conservation Status of S4T3, which indicates it may face some conservation concerns. If you’re interested in growing this plant, it’s crucial to source it responsibly from reputable native plant nurseries that propagate their stock rather than wild-collecting. Never dig plants from the wild – instead, support nurseries that are helping preserve these special California natives.

Garden Potential and Considerations

While detailed growing information for this specific subspecies is limited, members of the Calystegia family are generally known for their vigorous growth habits. False bindweeds can be enthusiastic spreaders, which makes them excellent for naturalizing areas but potentially challenging in formal garden settings.

This plant might be perfect for you if:

  • You’re creating a native California garden
  • You have space for a plant that likes to roam
  • You want to support local wildlife and pollinators
  • You appreciate the beauty of California’s natural heritage

The Bottom Line for Gardeners

Coast range false bindweed represents an opportunity to grow a piece of California’s botanical heritage in your own backyard. However, its conservation status means you’ll need to be a responsible gardener – source plants ethically and consider this species for naturalized areas where it can express its natural growth habits.

While we don’t have extensive cultivation guides for this particular subspecies, working with local native plant societies or specialized California native nurseries can help you determine if this plant is right for your specific garden conditions. Sometimes the most rewarding garden plants are the ones that challenge us to learn something new!

Remember, every native plant you grow is a small act of conservation, helping to preserve California’s unique botanical legacy for future generations to enjoy.

Coast Range False Bindweed

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Convolvulaceae Juss. - Morning-glory family

Genus

Calystegia R. Br. - false bindweed

Species

Calystegia collina (Greene) Brummitt - coast range false bindweed

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA