North America Native Plant

Guadalupe Cryptantha

Botanical name: Cryptantha maritima var. pilosa

USDA symbol: CRMAP

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Guadalupe Cryptantha: A Delicate Desert Beauty for Water-Wise Gardens Meet the Guadalupe cryptantha (Cryptantha maritima var. pilosa), a charming little annual that’s perfectly adapted to life in some of America’s most challenging landscapes. This native wildflower might be small in stature, but it packs a big punch when it comes ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2T4: Status is uncertain but is somewhere between the following rankings: 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) ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Guadalupe Cryptantha: A Delicate Desert Beauty for Water-Wise Gardens

Meet the Guadalupe cryptantha (Cryptantha maritima var. pilosa), a charming little annual that’s perfectly adapted to life in some of America’s most challenging landscapes. This native wildflower might be small in stature, but it packs a big punch when it comes to drought tolerance and understated beauty.

What Is Guadalupe Cryptantha?

Guadalupe cryptantha is an annual forb – essentially a non-woody flowering plant that completes its entire life cycle in one growing season. Don’t let the word forb intimidate you; think of it as nature’s way of describing a delicate wildflower that knows how to make the most of limited resources.

This little beauty belongs to the borage family and produces clusters of tiny white flowers that seem to sparkle against its fuzzy, grayish-green foliage. The pilosa in its scientific name refers to the soft hairs covering the plant – a clever adaptation that helps it conserve moisture in harsh conditions.

Where Does It Call Home?

This native American plant has carved out its niche in the southwestern United States, naturally occurring in Arizona, California, and Nevada. It’s particularly fond of coastal areas and desert regions where other plants might struggle to survive.

Why Consider Growing Guadalupe Cryptantha?

Here’s where things get interesting – and where you’ll want to pay attention to some important details:

  • Water-wise champion: Once established, this plant requires minimal irrigation, making it perfect for xeriscaping
  • Native pollinator magnet: The small flowers attract native bees and other beneficial insects
  • Low maintenance: As an annual, it does its thing and doesn’t require ongoing care
  • Authentic native choice: Supporting local ecosystems by choosing indigenous plants

Important note about rarity: Guadalupe cryptantha has a conservation status that suggests it may be uncommon in parts of its range. If you’re interested in growing this plant, please ensure you source seeds or plants from reputable native plant societies or nurseries that practice responsible collection methods. Never collect seeds from wild populations without proper permissions.

Garden Design and Landscape Use

This isn’t your typical border plant – Guadalupe cryptantha shines in specialized settings:

  • Rock gardens: Its low-growing habit and drought tolerance make it ideal for tucking between stones
  • Native plant gardens: Perfect for authentic regional landscapes
  • Coastal restoration projects: Helps stabilize soil while providing habitat
  • Desert-themed landscapes: Adds delicate texture to succulent gardens

Growing Conditions and Care

Guadalupe cryptantha is somewhat particular about its growing conditions, but once you understand its needs, it’s quite manageable:

Sunlight: Full sun is essential – this plant has evolved to handle intense southwestern sunshine.

Soil: Well-draining sandy or rocky soil is crucial. Heavy clay or constantly moist conditions will likely spell disaster for this desert adapted beauty.

Water: Less is definitely more. Overwatering is probably the quickest way to lose this plant.

USDA Hardiness Zones: Best suited for zones 8-10, matching its native southwestern range.

Planting and Care Tips

Since Guadalupe cryptantha is an annual, you’ll be starting fresh each year:

  • Timing: Direct seed in fall for spring germination, mimicking natural cycles
  • Seed preparation: No special treatment needed – these seeds are tough
  • Spacing: Scatter seeds lightly; nature will sort out the spacing
  • Watering: Provide minimal water during germination, then back off
  • Fertilizing: Skip it – rich soils can actually harm this plant

The Bottom Line

Guadalupe cryptantha is definitely a specialist plant for gardeners who appreciate subtle beauty and want to support native ecosystems. It’s not the showiest choice for a traditional flower bed, but in the right setting – a water-wise landscape, native plant garden, or coastal restoration project – it’s absolutely perfect.

Just remember to source it responsibly due to its conservation status, and don’t expect it to behave like your typical garden annual. This little survivor plays by desert rules, and once you understand that, you’ll appreciate its quiet charm and remarkable resilience.

If you’re new to native gardening or live outside its natural range, you might want to start with more common native alternatives. But for experienced native plant enthusiasts in the Southwest, Guadalupe cryptantha offers a chance to grow something truly special – and help preserve a piece of America’s natural heritage in the process.

Guadalupe 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 maritima (Greene) Greene - Guadalupe cryptantha

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