North America Native Plant

Chaparral False Bindweed

Botanical name: Calystegia occidentalis occidentalis var. tomentella

USDA symbol: CAOCT2

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Synonyms: Calystegia fulcrata (A. Gray) Brummitt var. deltoidea (Greene) Brummitt (CAFUD)  âš˜  Calystegia fulcrata (A. Gray) Brummitt ssp. tomentella (Greene) Brummitt (CAFUT)  âš˜  Calystegia malacophylla (Greene) Munz var. deltoidea (CAMAD)  âš˜  Calystegia malacophylla (Greene) Munz ssp. tomentella (CAMAT3)  âš˜  Convolvulus fulcratus (A. Gray) Greene var. deltoideus (Greene) Jeps. (COFUD)  âš˜  Convolvulus tomentellus Greene (COTO4)   

Chaparral False Bindweed: A Rare California Native Worth Protecting If you’re passionate about California’s native flora and looking to add something truly special to your garden, chaparral false bindweed (Calystegia occidentalis occidentalis var. tomentella) might just capture your interest. This perennial herb is a fascinating member of the morning glory ...

Rare plant alert!

Region: Conservation status by state

Status: S4T2T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ 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 ⚘

Chaparral False Bindweed: A Rare California Native Worth Protecting

If you’re passionate about California’s native flora and looking to add something truly special to your garden, chaparral false bindweed (Calystegia occidentalis occidentalis var. tomentella) might just capture your interest. This perennial herb is a fascinating member of the morning glory family that calls the Golden State home.

What Makes Chaparral False Bindweed Special?

Chaparral false bindweed is a native California perennial that grows as a forb herb – essentially a soft-stemmed plant without the woody tissue you’d find in shrubs or trees. As a member of the bindweed family, it likely shares some of the characteristic twining or trailing growth habits of its relatives, though it’s distinctly different from the more common invasive bindweeds that many gardeners know (and don’t love).

Where Does It Grow?

This plant is exclusively found in California, making it a true Golden State endemic. Its natural range is limited to specific areas within the state, contributing to its special conservation status.

A Plant That Needs Our Protection

Here’s something important to know: chaparral false bindweed has a Global Conservation Status of S4T2T3, which indicates it’s considered rare and potentially vulnerable. This means if you’re interested in growing this plant, you’ll need to be extra thoughtful about sourcing.

What this means for gardeners:

  • Only obtain plants or seeds from reputable native plant nurseries
  • Never collect from wild populations
  • Consider this plant as part of conservation gardening efforts
  • Choose responsibly sourced material to help protect wild populations

Growing Chaparral False Bindweed

As a California native perennial, chaparral false bindweed is likely adapted to the state’s Mediterranean climate patterns. While specific growing requirements for this variety aren’t well-documented, most California native bindweeds prefer:

  • Well-draining soil
  • Full sun to partial shade
  • Minimal summer water once established
  • Protection from harsh winds

Is This Plant Right for Your Garden?

Chaparral false bindweed could be perfect for you if you’re:

  • Creating a native California plant garden
  • Interested in conservation gardening
  • Looking for drought-tolerant perennials
  • Wanting to support local ecosystems

However, given its rarity status, this plant might not be the best choice for beginning native gardeners. Consider starting with more common California natives and working your way up to rarer species as you gain experience.

The Bottom Line

Chaparral false bindweed represents the kind of botanical treasure that makes California’s flora so special. While it requires careful sourcing due to its conservation status, it offers dedicated native plant gardeners a chance to grow something truly unique. If you can find responsibly sourced plants, you’ll be contributing to conservation efforts while adding a rare piece of California’s natural heritage to your landscape.

Remember: when it comes to rare natives like this one, every garden that grows them responsibly becomes a small sanctuary, helping ensure these special plants continue to thrive for future generations.

Chaparral 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 occidentalis (A. Gray) Brummitt - chaparral 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