North America Native Plant

Deepscar Cryptantha

Botanical name: Cryptantha excavata

USDA symbol: CREX

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Deepscar Cryptantha: A Rare California Native Worth Protecting If you’re passionate about California native plants and conservation gardening, you may have heard whispers about the elusive deepscar cryptantha (Cryptantha excavata). This little-known annual wildflower represents both the beauty and fragility of California’s native flora, making it a plant that deserves ...

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) ⚘

Deepscar Cryptantha: A Rare California Native Worth Protecting

If you’re passionate about California native plants and conservation gardening, you may have heard whispers about the elusive deepscar cryptantha (Cryptantha excavata). This little-known annual wildflower represents both the beauty and fragility of California’s native flora, making it a plant that deserves our attention and protection.

What Makes Deepscar Cryptantha Special

Deepscar cryptantha is an annual forb native exclusively to California. As a member of the borage family, it produces small, delicate white flowers that may seem modest compared to showier natives, but its rarity makes it incredibly special. This herbaceous plant lacks woody tissue and completes its entire life cycle within a single growing season.

The plant gets its common name from distinctive markings or scarring, though like many rare natives, detailed descriptions of its appearance are limited in readily available sources.

Where You’ll Find It (Or Won’t)

Deepscar cryptantha is found only in California, making it a true Golden State endemic. However, don’t expect to stumble across it on your next hiking trip – this plant is exceptionally rare.

A Conservation Concern

Here’s where things get serious: deepscar cryptantha has a Global Conservation Status of S2, meaning it’s imperiled. With typically only 6 to 20 known occurrences and an estimated 1,000 to 3,000 individual plants remaining, this species is extremely vulnerable to extinction.

This rarity status means that while we absolutely want to encourage growing this native plant, it must be done responsibly with properly sourced material – never collected from wild populations.

Garden Appeal and Design Role

In the garden, deepscar cryptantha would serve as:

  • A conversation starter about California’s rare flora
  • A component in specialized native plant collections
  • An educational tool for conservation-minded gardeners
  • A small but meaningful part of wildflower meadow plantings

Given its annual nature, expect it to complete its growing cycle within one season, making it suitable for gardeners who enjoy the changing dynamics of annual wildflowers.

Pollinator and Wildlife Benefits

Like other members of the Cryptantha genus, deepscar cryptantha likely produces small white flowers that attract native bees and other beneficial insects. While specific wildlife benefits aren’t well-documented due to its rarity, native annual wildflowers typically support local ecosystems in important ways.

Growing Conditions and Care

Based on its California native status and the growing patterns of related Cryptantha species, deepscar cryptantha likely prefers:

  • Full sun exposure
  • Well-draining soils
  • Minimal supplemental watering once established
  • USDA hardiness zones 8-10 (typical for California natives)

As an annual, it will need to reseed each year to maintain its presence in your garden.

The Responsible Gardener’s Approach

If you’re interested in growing deepscar cryptantha, please remember:

  • Only obtain seeds or plants from reputable native plant nurseries
  • Never collect from wild populations
  • Consider participating in conservation seed collection programs if available
  • Support organizations working to protect rare California natives

Should You Grow It?

The answer is a cautious yes – if you can source it responsibly. Deepscar cryptantha represents an opportunity to participate in conservation while adding a truly unique California native to your garden. However, its extreme rarity means this isn’t a plant for casual gardeners.

If you’re unable to find responsibly sourced deepscar cryptantha, consider other California native annuals like clarkia, lupines, or poppies that offer similar ecological benefits without conservation concerns.

By choosing to grow rare natives like deepscar cryptantha responsibly, we become partners in conservation, helping ensure these special plants have a future in both wild landscapes and carefully tended gardens.

Deepscar 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 excavata Brandegee - deepscar cryptantha

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