North America Native Plant

Tulare Cryptantha

Botanical name: Cryptantha incana

USDA symbol: CRIN7

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Tulare Cryptantha: A Rare California Native Worth Protecting If you’re passionate about native plants and conservation, you may have heard whispers about the elusive Tulare cryptantha (Cryptantha incana). This little-known California native is more than just another wildflower – it’s a botanical treasure that desperately needs our help to survive. ...

Rare plant alert!

Region: Conservation status by state

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Tulare Cryptantha: A Rare California Native Worth Protecting

If you’re passionate about native plants and conservation, you may have heard whispers about the elusive Tulare cryptantha (Cryptantha incana). This little-known California native is more than just another wildflower – it’s a botanical treasure that desperately needs our help to survive.

What Makes This Plant Special?

The Tulare cryptantha is an annual forb, meaning it completes its entire life cycle in just one year and lacks woody stems. Don’t let its humble appearance fool you – this silvery-leafed beauty produces delicate clusters of small white flowers that add a subtle charm to any native garden. The plant gets its silvery appearance from dense hairs covering its leaves, a clever adaptation to its harsh Central Valley home.

Where Does It Call Home?

This plant is a true California endemic, found exclusively in the Golden State’s Central Valley, particularly in the Tulare Basin region. As a native species to the lower 48 states, it has deep roots in the local ecosystem – quite literally!

A Plant in Peril

Here’s where things get serious: Cryptantha incana has a Global Conservation Status of S1, meaning it’s critically imperiled. With typically 5 or fewer occurrences and very few remaining individuals (less than 1,000), this plant is dancing on the edge of extinction. If you’re considering adding this rare gem to your garden, please ensure you source seeds or plants only from reputable native plant societies or conservation organizations that practice responsible collection methods.

Garden Role and Design Potential

While the Tulare cryptantha isn’t your typical showy garden star, it serves an important role in:

  • Native habitat restoration projects
  • Drought-tolerant xeriscapes
  • Specialized native plant collections
  • Educational conservation gardens

Its modest size and delicate flowers work best as part of a larger native plant community rather than as a standalone specimen.

Growing Conditions

This tough little annual thrives in conditions that would challenge many garden plants:

  • Soil: Sandy, alkaline, or disturbed soils with excellent drainage
  • Sun exposure: Full sun
  • Water needs: Minimal – drought-tolerant once established
  • Climate: USDA hardiness zones 8-10

Planting and Care Tips

Growing Tulare cryptantha requires patience and the right approach:

  • Direct seed in fall for natural winter stratification
  • Seeds may need cold stratification if planting in spring
  • Avoid overwatering – this plant prefers the tough love approach
  • Allow plants to self-seed for natural population establishment
  • Minimal fertilization needed in native soils

Supporting Pollinators

Despite their small size, the white flower clusters attract native bees and other small pollinators, making this plant a valuable contributor to local pollinator networks. Every Tulare cryptantha you successfully grow helps support the intricate web of native species relationships.

Should You Grow It?

If you’re committed to conservation and have experience with challenging native plants, growing Tulare cryptantha can be incredibly rewarding. However, this isn’t a plant for casual gardeners. Consider it only if you:

  • Can source seeds or plants responsibly
  • Have appropriate growing conditions
  • Are committed to conservation efforts
  • Understand the plant’s critical conservation status

For most gardeners interested in supporting California natives, consider more readily available alternatives like California poppies, lupines, or other local native annuals that provide similar ecological benefits without the conservation concerns.

Remember, every plant we save today helps preserve California’s botanical heritage for future generations. The Tulare cryptantha may be small, but its conservation story is mighty – and it needs dedicated gardeners like you to help write its next chapter.

Tulare Cryptantha

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

Cryptantha Lehm. ex G. Don - cryptantha

Species

Cryptantha incana Greene - Tulare cryptantha

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