Native Plants

Obispo Suncup

Camissonia campestris obispoensis

USDA symbol: CACAO

annual forb

Lower 48 states: native

Meet the Obispo suncup (Camissonia campestris obispoensis), a charming little annual that’s as rare as it is special. This delicate California native belongs to the evening primrose family and represents one of nature’s more exclusive offerings – the kind of plant that makes native gardening enthusiasts do a little happy ...

Obispo Suncup may be listed as rare in your area.
Global Conservation Status

Status: S3S4T1T3 | Apparently Secure: Uncommon but not rare, and usually widespread. Possible cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals.

Obispo Suncup: A Rare California Native Worth Protecting

Meet the Obispo suncup (Camissonia campestris obispoensis), a charming little annual that’s as rare as it is special. This delicate California native belongs to the evening primrose family and represents one of nature’s more exclusive offerings – the kind of plant that makes native gardening enthusiasts do a little happy dance when they spot it in the wild.

Where You’ll Find This California Gem

The Obispo suncup calls California home, with its distribution likely centered around the San Luis Obispo region, as suggested by its scientific name. This annual forb has carved out its niche in the Golden State’s diverse landscapes, though you won’t find it just anywhere – and that’s exactly what makes it so special.

  • Species observed
  • No observations

What Makes It Special (And Why You Should Care)

Here’s where things get serious for a moment. The Obispo suncup carries a Global Conservation Status of S3S4T1T3, which is conservation-speak for this plant needs our attention. It’s not common, and its limited distribution means every individual plant matters for the species’ survival.

As an annual forb, this little beauty completes its entire life cycle in just one growing season. It’s a herbaceous plant without woody tissue, meaning it stays soft and green rather than developing bark or woody stems. Think of it as nature’s equivalent of a one-season wonder that packs a lot of charm into a short lifespan.

Should You Grow Obispo Suncup?

The short answer is: maybe, but only if you can source it responsibly. Given its rarity status, this isn’t a plant you want to collect from the wild (please don’t!). If you’re lucky enough to find seeds or plants from reputable native plant nurseries or conservation organizations, then yes – growing Obispo suncup can be a meaningful way to support California’s native plant heritage.

Here’s what makes it garden-worthy:

  • True California native with deep local roots
  • Annual growth habit means it won’t take over your garden
  • Part of the diverse evening primrose family
  • Contributes to native plant conservation efforts
  • Supports local ecosystem relationships

Growing Your Obispo Suncup

Since specific growing information for this subspecies is limited, we’ll work with what we know about its characteristics as a California annual forb. Like most natives, it probably prefers conditions similar to its natural habitat – likely well-draining soils and the Mediterranean climate patterns that California natives love.

As an annual, you’ll need to replant or allow it to self-seed each year. The good news? Annuals are often excellent at self-sowing when they’re happy, so once established, your Obispo suncup might just keep the party going year after year.

A Word About Conservation

Growing rare natives like Obispo suncup is more than gardening – it’s conservation in action. By cultivating these special plants in our gardens, we’re creating backup populations and raising awareness about California’s incredible plant diversity. Just remember: only source your plants responsibly from reputable nurseries or seed exchanges, never from wild populations.

If you can’t find Obispo suncup, consider other California native annuals that might be more readily available. Your local native plant society can point you toward similar species that will give you that same I’m growing something special feeling while supporting your local ecosystem.

The Bottom Line

The Obispo suncup represents the kind of plant that makes native gardening an adventure. It’s rare, it’s special, and it connects your garden to California’s unique natural heritage. While it might not be the easiest plant to find or grow, it’s exactly the kind of species that reminds us why preserving native plant diversity matters.

So if you’re up for a conservation challenge and can source it responsibly, welcome this little annual into your garden. You’ll be doing your part to keep one of California’s special plants thriving for future generations to discover and admire.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Myrtales
Family: Onagraceae Juss. - Evening Primrose family
Genus: Camissonia Link - suncup

Species: Camissonia campestris (Greene) P.H. Raven - Mojave suncup

Subspecies: Camissonia campestris (Greene) P.H. Raven ssp. obispoensis P.H. Raven - Obispo suncup

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