North America Native Plant

Catalina Popcornflower

Botanical name: Plagiobothrys canescens var. catalinensis

USDA symbol: PLCAC4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Plagiobothrys arizonicus (A. Gray) Greene ex A. Gray var. catalinensis A. Gray (PLARC)   

Catalina Popcornflower: A Rare Island Gem for Your Native Garden Meet the Catalina popcornflower (Plagiobothrys canescens var. catalinensis), a charming little annual that’s as unique as its island home. This delicate wildflower might not make the biggest splash in your garden, but it carries a special story and brings understated ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Catalina Popcornflower: A Rare Island Gem for Your Native Garden

Meet the Catalina popcornflower (Plagiobothrys canescens var. catalinensis), a charming little annual that’s as unique as its island home. This delicate wildflower might not make the biggest splash in your garden, but it carries a special story and brings understated beauty to native plant landscapes.

What Makes Catalina Popcornflower Special?

This petite forb belongs to the borage family and gets its whimsical popcornflower name from its tiny white blooms that cluster together like little kernels. As an annual plant, it completes its entire life cycle in one growing season, making it a perfect choice for gardeners who enjoy seasonal variety and natural succession in their landscapes.

The Catalina popcornflower is native exclusively to California and represents a truly special piece of the Golden State’s botanical heritage. Its rarity status (Global Conservation Status S5T3?) means this plant deserves our attention and care as gardeners.

Where Does It Come From?

This endemic beauty calls California home, with its natural range centered around the Channel Islands, particularly Santa Catalina Island. It’s perfectly adapted to the Mediterranean climate and coastal conditions that make California such a unique growing environment.

Should You Grow Catalina Popcornflower?

Here’s where things get interesting. While this native plant would make a wonderful addition to the right garden, its rarity status means we need to be thoughtful gardeners. If you’re drawn to this special wildflower, here are some considerations:

  • Only source seeds or plants from reputable native plant nurseries that propagate responsibly
  • Never collect from wild populations
  • Consider it for specialized native plant gardens or Channel Islands-themed landscapes
  • Perfect for gardeners interested in conservation and rare plant cultivation

Garden Role and Design Ideas

Catalina popcornflower works beautifully as:

  • A delicate ground cover in native wildflower meadows
  • An understory plant beneath taller California natives
  • A seasonal accent in rock gardens or coastal-themed landscapes
  • Part of a conservation garden focused on rare California flora

Growing Conditions and Care

This adaptable annual thrives in conditions that mirror its island home:

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soils; adaptable to various soil types
  • Water: Drought tolerant once established; enjoys winter rains and dry summers
  • Climate: Best suited for USDA zones 9-11 with Mediterranean-type climates

Planting and Care Tips

Growing Catalina popcornflower successfully is surprisingly straightforward:

  • Direct seed in fall for spring germination and blooming
  • Scatter seeds after the first rains of the season
  • Requires minimal supplemental watering once established
  • Allow plants to self-seed for natural populations
  • No fertilization needed – these plants prefer lean soils

Benefits for Pollinators and Wildlife

Don’t let its small size fool you – Catalina popcornflower punches above its weight when it comes to supporting local ecosystems. The small flowers attract native bees, beneficial insects, and other pollinators that appreciate the accessible nectar and pollen sources.

The Conservation Connection

By choosing to grow Catalina popcornflower responsibly, you’re participating in plant conservation. This rare variety represents California’s incredible botanical diversity and the unique ecosystems of the Channel Islands. When you include it in your garden, you’re helping preserve genetic diversity and keeping this special plant in cultivation.

Remember: always source your plants or seeds from reputable native plant sales, botanical gardens, or specialized nurseries that focus on California natives. This ensures you’re supporting conservation rather than potentially impacting wild populations.

Final Thoughts

Catalina popcornflower might be small and subtle, but it offers something truly special – a connection to California’s unique island ecosystems and a chance to participate in preserving botanical heritage. If you’re passionate about native plants and conservation, and you can source it responsibly, this charming annual deserves a place in your garden’s story.

Catalina 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 canescens Benth. - 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