North America Native Plant

San Joaquin Dodder

Botanical name: Cuscuta brachycalyx var. apodanthera

USDA symbol: CUBRA

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

San Joaquin Dodder: A Rare California Native You Shouldn’t Try to Grow Meet the San Joaquin dodder (Cuscuta brachycalyx var. apodanthera), one of California’s most unusual and rare native plants. Before you get excited about adding this perennial to your garden, let’s talk about why this particular plant is definitely ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3T1T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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) ⚘ 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 ⚘ 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. ⚘

San Joaquin Dodder: A Rare California Native You Shouldn’t Try to Grow

Meet the San Joaquin dodder (Cuscuta brachycalyx var. apodanthera), one of California’s most unusual and rare native plants. Before you get excited about adding this perennial to your garden, let’s talk about why this particular plant is definitely not your typical garden center find – and why that’s actually a good thing for conservation.

What Makes San Joaquin Dodder Special

San Joaquin dodder belongs to the fascinating world of parasitic plants. Unlike your typical garden favorites, this perennial herb doesn’t play by the usual rules of photosynthesis. Instead, it’s what botanists call a forb – a vascular plant without woody tissue that survives by attaching itself to host plants for nutrients.

This remarkable adaptation makes it one of nature’s most specialized survivors, but also one of its most vulnerable species.

Where You’ll Find This Rare Native

San Joaquin dodder is native to the lower 48 states, but its current range is extremely limited to California. This narrow distribution is one of the reasons why conservation experts are keeping a close eye on this species.

Conservation Status: Handle with Care

Here’s where things get serious – San Joaquin dodder has a Global Conservation Status of S2S3T1T3, which indicates it’s a rare species that needs protection. This rarity status means that even if you could grow it (which would be incredibly difficult), you absolutely shouldn’t attempt to collect it from the wild.

For native plant enthusiasts, this is a look but don’t touch species that’s best appreciated in its natural habitat or through conservation photography.

Why This Isn’t a Garden Plant

Even setting aside conservation concerns, San Joaquin dodder presents unique challenges that make it unsuitable for typical garden settings:

  • It requires specific host plants to survive
  • Its parasitic nature means it doesn’t contribute to traditional garden aesthetics
  • Cultivation requirements are largely unknown and likely very specialized
  • Its rarity makes responsible sourcing nearly impossible

Supporting Conservation Instead

Rather than trying to grow San Joaquin dodder, consider these ways to support California’s rare native plants:

  • Plant other California natives that are more suitable for cultivation
  • Support local botanical gardens and native plant societies
  • Participate in habitat restoration projects
  • Learn about and advocate for rare plant conservation

The Bigger Picture

San Joaquin dodder serves as a perfect example of why not every native plant belongs in our home gardens. Some species are so specialized or rare that their conservation depends on protecting their natural habitats rather than attempting cultivation.

By understanding and respecting these limitations, we can better focus our gardening efforts on native plants that truly benefit from cultivation while supporting conservation efforts for species like San Joaquin dodder that need our protection in the wild.

Remember, being a responsible native plant gardener sometimes means knowing when not to plant something – and that’s perfectly okay!

San Joaquin Dodder

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

Cuscutaceae Dumort. - Dodder family

Genus

Cuscuta L. - dodder

Species

Cuscuta brachycalyx (Yunck.) Yunck. - San Joaquin dodder

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