North America Native Plant

Scarlet Gilia

Botanical name: Ipomopsis aggregata attenuata

USDA symbol: IPAGA2

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Gilia aggregata (Pursh) Spreng. var. attenuata A. Gray (GIAGA3)  âš˜  Gilia attenuata (A. Gray) A. Nelson (GIAT)  âš˜  Ipomopsis aggregata (Pursh) V.E. Grant var. attenuata (A. Gray) Dorn (IPAGA4)   

Scarlet Gilia: A Native Wildflower Worth Discovering If you’re looking to add authentic native beauty to your garden, Ipomopsis aggregata attenuata—commonly known as scarlet gilia—might just be the hidden gem you’ve been seeking. This native wildflower brings a splash of color to gardens while supporting local ecosystems, though it remains ...

Scarlet Gilia: A Native Wildflower Worth Discovering

If you’re looking to add authentic native beauty to your garden, Ipomopsis aggregata attenuata—commonly known as scarlet gilia—might just be the hidden gem you’ve been seeking. This native wildflower brings a splash of color to gardens while supporting local ecosystems, though it remains one of the lesser-known members of the native plant family.

What Makes This Plant Special?

Scarlet gilia belongs to the diverse world of native forbs—those wonderful herbaceous plants that lack woody stems but pack plenty of personality. As a biennial to perennial plant, it offers gardeners flexibility in planning, sometimes blooming in its second year or returning for multiple seasons depending on growing conditions.

This particular variety has quite the botanical family tree, having been known by several scientific names throughout history, including Gilia aggregata var. attenuata and Gilia attenuata. But don’t let the name changes fool you—this plant has been quietly thriving in American landscapes long before botanists started shuffling its paperwork!

Where Does It Call Home?

Scarlet gilia is proudly native to the lower 48 states, with this particular variety naturally occurring in Colorado and Wyoming. These mountain and high plains states have shaped this plant’s character, making it well-adapted to challenging growing conditions that would leave many garden center darlings wilting.

Why Consider Growing Scarlet Gilia?

Here’s where things get both exciting and a bit mysterious. While scarlet gilia as a species is known for its stunning trumpet-shaped flowers and wildlife value, specific information about the attenuata variety is surprisingly limited in horticultural literature. This presents both an opportunity and a challenge for adventurous gardeners.

What we do know is compelling:

  • It’s a true native, meaning it evolved alongside local wildlife and growing conditions
  • As a forb, it provides textural diversity in native plant gardens
  • Its biennial to perennial nature offers potential for both short-term color and long-term garden presence
  • Being native to challenging mountain environments suggests good drought tolerance

The Growing Challenge (And Opportunity)

Here’s where I need to be completely honest with you: specific growing information for Ipomopsis aggregata attenuata is remarkably scarce. This variety seems to be one of those plants that botanists have catalogued but gardeners haven’t fully embraced yet.

What this means for you as a gardener:

  • Finding seeds or plants may require contacting specialized native plant nurseries
  • You might be pioneering the cultivation of this particular variety
  • Growing conditions will likely mirror those of its Colorado and Wyoming native habitat—think well-draining soils and full sun
  • Hardiness zones are probably similar to other high-elevation western natives

Is This Plant Right for Your Garden?

Scarlet gilia could be perfect for you if:

  • You love being a plant pioneer and trying something truly unique
  • You’re creating a native plant garden focused on Colorado/Wyoming flora
  • You appreciate the conservation value of growing lesser-known native varieties
  • You have experience with challenging or uncommon native plants

However, you might want to consider alternatives if:

  • You prefer plants with well-established growing guides and readily available sources
  • You’re new to native gardening and want to start with easier species
  • You need guaranteed results for a specific garden design

Moving Forward with Scarlet Gilia

If you’re intrigued by this native beauty, your best bet is to contact native plant societies in Colorado and Wyoming, specialized wildflower seed companies, or botanical gardens in these regions. They may have insights into growing this particular variety or can direct you to sources.

Alternatively, consider starting with the more widely available Ipomopsis aggregata (the parent species), which offers similar native benefits with much more established cultivation information.

Sometimes the most rewarding garden adventures come from exploring the road less traveled—and Ipomopsis aggregata attenuata is definitely that kind of journey. Whether you become one of the first gardeners to successfully cultivate this variety or it leads you to discover other amazing native plants, you’re contributing to the important work of preserving and celebrating our native flora.

Scarlet Gilia

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

Solanales

Family

Polemoniaceae Juss. - Phlox family

Genus

Ipomopsis Michx. - ipomopsis

Species

Ipomopsis aggregata (Pursh) V.E. Grant - scarlet gilia

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