North America Native Plant

Salinas Valley Popcornflower

Botanical name: Plagiobothrys uncinatus

USDA symbol: PLUN

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Salinas Valley Popcornflower: A Rare California Native Worth Protecting If you’re a native plant enthusiast with a passion for conservation, the Salinas Valley popcornflower might just capture your heart. This delicate annual wildflower (Plagiobothrys uncinatus) represents something truly special in the world of California native plants – a rare gem ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: 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) ⚘

Salinas Valley Popcornflower: A Rare California Native Worth Protecting

If you’re a native plant enthusiast with a passion for conservation, the Salinas Valley popcornflower might just capture your heart. This delicate annual wildflower (Plagiobothrys uncinatus) represents something truly special in the world of California native plants – a rare gem that deserves our attention and careful stewardship.

What Makes This Plant Special?

The Salinas Valley popcornflower is a charming little forb – that’s botanist-speak for a soft-stemmed flowering plant that dies back each year. As an annual, it completes its entire life cycle in just one growing season, making every bloom precious and fleeting.

This native Californian produces small white flowers that give the popcornflower family its whimsical name. The blooms have a delicate, almost ethereal quality that adds subtle beauty to any native garden lucky enough to host them.

Where Does It Call Home?

As its common name suggests, this rare wildflower is endemic to California, with its heart in the Salinas Valley region. Its limited distribution makes it a true California treasure – a plant that exists nowhere else on Earth.

The Rarity Reality Check

Here’s what every gardener needs to know: The Salinas Valley popcornflower carries a Global Conservation Status of S2, which means it’s imperiled. With typically only 6 to 20 known occurrences and potentially just 1,000 to 3,000 remaining individuals, this plant is walking a tightrope toward extinction.

If you’re considering adding this species to your garden, please ensure you source seeds or plants only from reputable native plant nurseries that practice responsible collection methods. Never collect from wild populations.

Garden Role and Design Potential

The Salinas Valley popcornflower isn’t your typical showstopper – and that’s part of its charm. This plant excels in:

  • Specialized native California gardens
  • Conservation-focused landscapes
  • Educational gardens highlighting rare species
  • Naturalized areas mimicking Central California habitats

Its delicate stature makes it perfect for close-up viewing in rock gardens or as part of a mixed native wildflower display where visitors can appreciate its subtle beauty.

Pollinator and Wildlife Benefits

While specific wildlife data for this rare species is limited, popcornflowers typically support small native bees and other pollinators. By growing this plant, you’re potentially providing crucial habitat for insects that co-evolved with California’s native flora.

Growing Conditions and Care

Successfully growing Salinas Valley popcornflower requires mimicking its natural Central California habitat:

  • Climate: Best suited for USDA zones 9-10
  • Soil: Well-draining soils that don’t stay waterlogged
  • Water: Seasonal moisture pattern – wet winters, dry summers
  • Sun: Likely prefers full sun to partial shade

Planting and Care Tips

Growing rare natives like this popcornflower requires patience and dedication:

  • Plant seeds in fall to winter for spring germination
  • Seeds may require cold stratification to break dormancy
  • Provide consistent moisture during germination and early growth
  • Allow plants to set seed naturally to maintain the population
  • Consider container growing for better control and protection

Should You Grow It?

The Salinas Valley popcornflower isn’t for every gardener, but it might be perfect for you if:

  • You’re passionate about plant conservation
  • You have experience with challenging native plants
  • You can source seeds or plants responsibly
  • You’re committed to helping preserve California’s botanical heritage

Remember, with great rarity comes great responsibility. If you choose to grow this special plant, you’re becoming a steward of California’s natural heritage. Every successful garden population helps ensure that future generations might still glimpse these delicate white blooms dancing in a California breeze.

Consider this plant not just as a garden addition, but as a living piece of conservation history that you can nurture and protect in your own backyard.

Salinas Valley Popcornflower

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

Lamiales

Family

Boraginaceae Juss. - Borage family

Genus

Plagiobothrys Fisch. & C.A. Mey. - popcornflower

Species

Plagiobothrys uncinatus J.T. Howell - Salinas Valley popcornflower

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