North America Native Plant

Mancos Shale Packera

Botanical name: Packera mancosana

USDA symbol: PAMA2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Mancos Shale Packera: A Rare Colorado Treasure for the Dedicated Native Gardener If you’re the type of gardener who gets excited about growing something truly special – something that most people have never heard of – then Mancos Shale Packera might just be your next obsession. This little-known Colorado native ...

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) ⚘

Mancos Shale Packera: A Rare Colorado Treasure for the Dedicated Native Gardener

If you’re the type of gardener who gets excited about growing something truly special – something that most people have never heard of – then Mancos Shale Packera might just be your next obsession. This little-known Colorado native is about as exclusive as plants get, and for good reason.

What Makes This Plant So Special?

Packera mancosana, commonly known as Mancos Shale Packera, is a perennial forb that’s endemic to Colorado. What makes it particularly fascinating is right there in the name – this plant has evolved to thrive in the unique Mancos Shale formations of western Colorado. It’s essentially a geological specialist that has carved out its own tiny niche in the plant world.

As a member of the sunflower family, Mancos Shale Packera produces cheerful yellow daisy-like flowers that brighten up its specialized habitat. But here’s the catch – and it’s a big one – this plant is critically imperiled with a Global Conservation Status of S1. That means there are typically five or fewer known populations, making it one of Colorado’s botanical rarities.

Where Does It Grow?

Mancos Shale Packera is found exclusively in Colorado, making it a true state endemic. Its distribution is tied closely to specific geological formations, which explains why it’s so rare and specialized.

Should You Grow Mancos Shale Packera?

Here’s where things get both exciting and complicated. If you’re passionate about native plant conservation and have access to responsibly sourced seeds or plants, growing Mancos Shale Packera could be an incredible way to help preserve this rare species. However, this isn’t a plant for casual gardeners or those looking for instant gratification.

Important Conservation Considerations

Before you get too excited, let’s talk about the elephant in the room – this plant’s rarity status. With so few populations remaining in the wild, it’s absolutely crucial that any Mancos Shale Packera you grow comes from responsibly sourced material. This means:

  • Never collect seeds or plants from wild populations
  • Only purchase from reputable native plant nurseries that can verify their source
  • Consider participating in seed banking or conservation programs
  • Share seeds with other conservation-minded gardeners to help build cultivated populations

Growing Conditions and Care

If you do decide to take on the challenge of growing this rare beauty, you’ll need to recreate its specialized habitat preferences. Mancos Shale Packera is adapted to:

  • Well-draining, alkaline soils (think rocky, mineral-rich conditions)
  • Full sun to partial shade
  • Minimal water once established – this is a drought-adapted specialist
  • USDA hardiness zones 4-7, based on its Colorado distribution

Design Ideas for Your Garden

This isn’t a plant that’s going to anchor your perennial border or provide mass color. Instead, think of Mancos Shale Packera as a conversation starter in specialized settings:

  • Rock gardens with excellent drainage
  • Native plant collections focused on Colorado endemics
  • Xeriscaped areas that celebrate drought-adapted plants
  • Educational gardens that highlight rare and endangered species

Pollinator and Wildlife Benefits

While small in stature, Mancos Shale Packera pulls its weight when it comes to supporting local ecosystems. Its yellow flowers attract various small pollinators, including native bees and beneficial flies. By growing this plant, you’re not just adding a rare species to your garden – you’re providing habitat for the specialized insects that have co-evolved with Colorado’s unique flora.

The Bottom Line

Mancos Shale Packera isn’t for everyone, and frankly, that’s okay. This is a plant for gardeners who are passionate about conservation, comfortable with challenges, and excited about growing something truly rare. If you’re willing to do your homework, source responsibly, and provide the right growing conditions, you could be helping to preserve one of Colorado’s most endangered plants right in your own backyard.

Just remember – with great rarity comes great responsibility. If you choose to grow Mancos Shale Packera, you’re becoming a conservation partner, not just a gardener. And that’s pretty special indeed.

Mancos Shale Packera

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Packera Á. Löve & D. Löve - ragwort

Species

Packera mancosana L. Yeatts, B. Schneider, & Al Schneid. - Mancos Shale Packera

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