North America Native Plant

Tracy’s Collomia

Botanical name: Collomia tracyi

USDA symbol: COTR

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Tracy’s Collomia: A Rare California Native Worth Protecting Meet Tracy’s collomia (Collomia tracyi), a charming little wildflower that’s as rare as it is beautiful. This delicate annual is one of California’s special native treasures, and while you might not find it at your local nursery, it’s definitely worth knowing about ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: 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 ⚘

Tracy’s Collomia: A Rare California Native Worth Protecting

Meet Tracy’s collomia (Collomia tracyi), a charming little wildflower that’s as rare as it is beautiful. This delicate annual is one of California’s special native treasures, and while you might not find it at your local nursery, it’s definitely worth knowing about – especially if you’re passionate about preserving California’s unique botanical heritage.

What Makes Tracy’s Collomia Special?

Tracy’s collomia is what botanists call a forb – essentially a non-woody flowering plant that completes its entire life cycle in just one growing season. Think of it as nature’s own annual wildflower, designed to make the most of California’s Mediterranean climate patterns.

This little beauty belongs to the phlox family and shares the delicate, clustered flower structure that makes its relatives so appealing to both gardeners and pollinators alike.

Where Does Tracy’s Collomia Call Home?

Tracy’s collomia is a true California endemic, meaning it exists nowhere else on Earth. This makes it extra special – and extra vulnerable. The plant has adapted specifically to California’s unique growing conditions and climate patterns.

A Plant in Need of Protection

Here’s where things get serious: Tracy’s collomia has a Global Conservation Status of S3, which means it’s considered Vulnerable. In plain English, this means the species is at risk due to its rarity and limited distribution. Scientists estimate there are only between 21 to 100 known populations, with roughly 3,000 to 10,000 individual plants in existence.

This rarity status is both a red flag and a call to action for native plant enthusiasts.

Should You Grow Tracy’s Collomia?

The short answer is: maybe, but with important caveats. If you’re interested in growing this rare beauty, you absolutely must ensure any seeds or plants come from responsible, ethical sources. Never collect from wild populations – this could further threaten an already vulnerable species.

Here’s when Tracy’s collomia might be right for your garden:

  • You’re creating a specialized California native plant collection
  • You have access to responsibly sourced, legally obtained seeds or plants
  • You’re committed to potentially saving seeds to help conservation efforts
  • You want to support rare plant preservation through cultivation

Growing Tracy’s Collomia: What We Know

Since Tracy’s collomia is so rare, specific growing information is limited. However, based on its annual nature and California origins, here are some educated guidelines:

Growing Conditions: Like most California natives, Tracy’s collomia likely prefers well-draining soil and full sun to partial shade. It’s adapted to California’s dry summer, wet winter pattern.

Hardiness: Being a California native, it’s likely suited to USDA zones 8-10, though specific zone information isn’t well documented.

Garden Role: This would be perfect for native wildflower meadows, specialized rare plant collections, or naturalized areas where it can self-seed and establish small colonies.

Care Tips: As an annual, it will complete its life cycle in one season, so allowing it to set seed is crucial for next year’s display. Minimal water during summer months would mimic its natural habitat.

Supporting Conservation Through Gardening

If you can’t find Tracy’s collomia through responsible sources, consider growing other Collomia species or supporting conservation organizations that work to protect rare California plants. Sometimes the best way to help a rare species is to protect its habitat and support the organizations doing the important work of conservation.

Growing rare natives like Tracy’s collomia isn’t just about adding something unique to your garden – it’s about becoming part of a conservation story. Every responsibly grown rare plant is a small victory against extinction.

The Bottom Line

Tracy’s collomia represents both the incredible diversity of California’s native flora and the fragility of that heritage. While it may not be the easiest plant to obtain or grow, it serves as a reminder that our gardens can be more than just beautiful spaces – they can be arks of conservation, helping preserve species for future generations.

If you’re lucky enough to grow this rare beauty, consider yourself a conservation gardener. Just remember: with great rarity comes great responsibility.

Tracy’s Collomia

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

Polemoniaceae Juss. - Phlox family

Genus

Collomia Nutt. - trumpet

Species

Collomia tracyi H. Mason - Tracy's collomia

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