North America Native Plant

Weber’s Cryptantha

Botanical name: Cryptantha weberi

USDA symbol: CRWE2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Oreocarya weberi (I.M. Johnst.) W.A. Weber (ORWE2)   

Weber’s Cryptantha: A Rare Colorado Native Worth Protecting If you’re passionate about native plants and love a good gardening challenge, Weber’s cryptantha (Cryptantha weberi) might just capture your heart. This delicate perennial herb is a true Colorado original – and by that, we mean it grows nowhere else on Earth! ...

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 ⚘

Weber’s Cryptantha: A Rare Colorado Native Worth Protecting

If you’re passionate about native plants and love a good gardening challenge, Weber’s cryptantha (Cryptantha weberi) might just capture your heart. This delicate perennial herb is a true Colorado original – and by that, we mean it grows nowhere else on Earth! But before you start planning where to plant it, there’s something important you need to know about this special little wildflower.

What Makes Weber’s Cryptantha Special?

Weber’s cryptantha is what botanists call a forb – basically a non-woody flowering plant that comes back year after year. Don’t let the fancy terminology fool you though; this is simply a charming little wildflower that’s perfectly adapted to Colorado’s unique high-elevation environment. You might also see it listed under its former scientific name, Oreocarya weberi, in older plant references.

What sets this plant apart is its rarity. Weber’s cryptantha has a Global Conservation Status of S3, which means it’s considered vulnerable. With typically only 21 to 100 known occurrences and between 3,000 to 10,000 individuals in the wild, this isn’t your run-of-the-mill garden center find.

Where Does Weber’s Cryptantha Call Home?

This Colorado endemic is found exclusively within the state’s borders, making it a true local treasure. It’s perfectly at home in the challenging conditions of Colorado’s high-elevation landscapes, where many other plants simply can’t survive.

Should You Grow Weber’s Cryptantha?

Here’s where we need to have an honest conversation. While Weber’s cryptantha would make a fascinating addition to the right garden, its vulnerable status means we need to be extra thoughtful about how we approach growing it.

The Good News:

  • It’s a native Colorado plant, supporting local ecosystem health
  • Attracts native pollinators, particularly small native bees
  • Perfect for specialized alpine and rock gardens
  • Extremely drought-tolerant once established
  • Unique conversation piece for serious native plant enthusiasts

The Important Considerations:

  • Due to its vulnerable status, only plant responsibly sourced material
  • Never collect from wild populations
  • Requires very specific growing conditions
  • Not suitable for typical home landscapes

Growing Weber’s Cryptantha Successfully

If you’ve decided to take on the challenge of growing this rare beauty, here’s what you need to know:

Perfect Growing Conditions:

  • Sunlight: Full sun is essential
  • Soil: Extremely well-draining soil is non-negotiable
  • Water: Minimal water requirements; drought-tolerant when established
  • Climate: Hardy in USDA zones 4-7

Garden Applications:

Weber’s cryptantha isn’t meant for your average perennial border. Instead, it shines in:

  • Rock gardens with excellent drainage
  • Alpine garden settings
  • Xeriscape designs
  • Specialized native plant collections

Care Tips:

  • Provide excellent drainage – this cannot be overstated
  • Avoid overwatering, which can quickly kill the plant
  • Mimic its natural high-elevation habitat as closely as possible
  • Be patient – rare plants often grow slowly

The Bottom Line

Weber’s cryptantha represents something special in the plant world – a true Colorado original that’s both beautiful and ecologically important. While it’s not the easiest plant to grow or find, dedicated native plant enthusiasts who can provide the right conditions and source plants responsibly will be rewarded with a truly unique addition to their gardens.

If you’re interested in growing Weber’s cryptantha, connect with reputable native plant societies, botanical gardens, or conservation organizations in Colorado. They can help you source plants ethically and provide additional growing guidance for this remarkable little survivor.

Remember, every plant we grow responsibly helps ensure future generations will be able to enjoy these botanical treasures. Weber’s cryptantha may be small, but it carries the big responsibility of representing Colorado’s unique natural heritage right in your garden.

Weber’s 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 weberi I.M. Johnst. - Weber's cryptantha

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