North America Native Plant

Desertbells

Botanical name: Phacelia campanularia vasiformis

USDA symbol: PHCAV

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Desertbells: A Rare California Native Worth Knowing If you’re passionate about supporting California’s native plant heritage, you might want to get acquainted with desertbells (Phacelia campanularia vasiformis). This little-known annual forb represents a special piece of the Golden State’s botanical puzzle, though it comes with some important considerations for the ...

Rare plant alert!

Region: Conservation status by state

Status: S3?T2T3: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is 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. ⚘

Desertbells: A Rare California Native Worth Knowing

If you’re passionate about supporting California’s native plant heritage, you might want to get acquainted with desertbells (Phacelia campanularia vasiformis). This little-known annual forb represents a special piece of the Golden State’s botanical puzzle, though it comes with some important considerations for the conscientious gardener.

What Makes Desertbells Special

Desertbells belongs to the fascinating Phacelia genus, known for producing some of California’s most pollinator-friendly wildflowers. As an annual forb, this herbaceous plant completes its entire life cycle in one growing season, making it a dynamic addition to naturalized areas where it can self-sow and create seasonal displays.

What sets this particular species apart is its rarity status. With a Global Conservation Status of S3?T2T3, desertbells falls into a category that suggests some level of conservation concern, though the exact classification remains somewhat undefined. This makes it both a treasure and a responsibility for gardeners who choose to grow it.

Native Range and Distribution

Desertbells is exclusively native to California, representing one of the state’s endemic treasures. As a plant species native to the lower 48 states, it has evolved specifically within California’s unique ecosystems and climate conditions.

Should You Grow Desertbells?

Here’s where things get interesting. While desertbells offers the appeal of supporting native biodiversity and potentially providing habitat for local wildlife, its rarity status means you’ll need to be extra thoughtful about your approach.

The Good News:

  • Supporting a truly native California species
  • Annual growth habit means low long-term commitment
  • Contributes to preserving genetic diversity of native plants
  • Part of the ecologically important Phacelia family

The Important Considerations:

  • Rarity status means responsible sourcing is absolutely essential
  • Limited availability through commercial sources
  • Specific growing requirements may be challenging to meet
  • Best suited for dedicated native plant enthusiasts

Growing Desertbells Responsibly

If you decide to grow desertbells, the most crucial step is ensuring you source seeds or plants responsibly. Never collect from wild populations, as this could further threaten already vulnerable populations. Instead:

  • Work with reputable native plant societies or botanical gardens
  • Look for responsibly propagated material from conservation programs
  • Consider participating in seed collection efforts organized by conservation groups
  • Connect with local native plant chapters who might have seed swaps

Garden Role and Landscape Use

As an annual forb, desertbells works best in naturalized settings where it can follow its natural growing patterns. Think wildflower meadows, restoration areas, or dedicated native plant gardens rather than formal landscaping. Its herbaceous nature means it lacks woody tissue, so it won’t provide structural elements but rather seasonal color and texture.

The Reality Check

Here’s the honest truth: growing desertbells isn’t for every gardener. With limited information available about specific growing conditions, care requirements, and availability, this plant is better suited for experienced native plant enthusiasts who enjoy the challenge of working with rare species.

If you’re new to native gardening or looking for reliable, easy-to-grow California natives, you might want to start with more readily available Phacelia species or other California annuals before tackling this rare gem.

Supporting Conservation

Sometimes the best way to support a rare plant isn’t necessarily growing it in your own garden. Consider supporting organizations that work to protect California’s native plant habitats, participating in citizen science projects, or volunteering with local restoration efforts. These actions can have a bigger impact on preserving species like desertbells than individual garden efforts.

Whether you choose to grow desertbells or simply appreciate it from afar, knowing about plants like this helps us understand the incredible diversity and fragility of California’s native flora. Every native species, no matter how small or obscure, plays a role in the complex web of relationships that make our ecosystems thrive.

Desertbells

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

Hydrophyllaceae R. Br. - Waterleaf family

Genus

Phacelia Juss. - phacelia

Species

Phacelia campanularia A. Gray - desertbells

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