North America Native Plant

Scarlet Gilia

Botanical name: Ipomopsis aggregata formosissima

USDA symbol: IPAGF

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Gilia aggregata (Pursh) Spreng. ssp. formosissima (Greene) Wherry (GIAGF)  âš˜  Gilia aggregata (Pursh) Spreng. var. maculata M.E. Jones (GIAGM)  âš˜  Gilia texana (Greene) Wooton & Standl. (GITE7)  âš˜  Ipomopsis aggregata (Pursh) V.E. Grant ssp. texana (Greene) W.C. Martin & C.R. Hutchins (IPAGT)  âš˜  Ipomopsis aggregata (Pursh) V.E. Grant var. texana (Greene) Shinners (IPAGT2)  âš˜  Ipomopsis arizonica (Greene) Wherry ssp. texana (IPART)   

Scarlet Gilia: A Native Wildflower Worth Discovering If you’re looking to add a splash of native color to your garden while supporting local ecosystems, scarlet gilia might just be the perfect addition you didn’t know you needed. This charming native wildflower, scientifically known as Ipomopsis aggregata formosissima, represents a specific ...

Scarlet Gilia: A Native Wildflower Worth Discovering

If you’re looking to add a splash of native color to your garden while supporting local ecosystems, scarlet gilia might just be the perfect addition you didn’t know you needed. This charming native wildflower, scientifically known as Ipomopsis aggregata formosissima, represents a specific subspecies of the beloved scarlet gilia that’s been quietly beautifying western landscapes for centuries.

What Makes This Plant Special?

Scarlet gilia is a true native son of the American West, calling the lower 48 states home with a natural grace that only indigenous plants can possess. As a forb—basically a fancy way of saying it’s an herbaceous flowering plant without woody stems—this beauty brings that authentic wildflower charm that cultivated garden plants often try (and fail) to replicate.

What’s particularly interesting about this plant is its flexible life strategy. It can live as either a biennial or perennial, adapting to local conditions like a seasoned traveler who’s learned to go with the flow. This adaptability is part of what makes native plants such garden rockstars—they’re already programmed to thrive in their home territories.

Where You’ll Find It Growing Wild

This subspecies of scarlet gilia has claimed territory across an impressive stretch of the western United States. You’ll find it naturally occurring in Arizona, California, Colorado, Nevada, New Mexico, Oklahoma, Oregon, Texas, Utah, and Washington. That’s quite a range for any plant, speaking to its remarkable adaptability across different climates and elevations.

Why Consider Adding It to Your Garden?

Native plants like this scarlet gilia subspecies offer several compelling advantages for the thoughtful gardener:

  • It’s perfectly adapted to regional growing conditions, meaning less fussing and more enjoying
  • Native plants typically require less water once established, making them eco-friendly choices
  • They support local wildlife and pollinator populations that have evolved alongside them
  • You’re preserving genetic diversity and supporting regional plant heritage

The Garden Reality Check

Here’s where we need to be honest: specific growing information for Ipomopsis aggregata formosissima is somewhat limited in readily available sources. This isn’t uncommon with subspecies of native plants, where most cultivation advice focuses on the broader species group. While this might seem like a drawback, it’s actually pretty typical when working with native subspecies that haven’t been widely commercialized.

Your Best Growing Strategy

If you’re intrigued by this particular subspecies, here’s your game plan:

  • Connect with local native plant societies in states where it naturally occurs
  • Contact regional botanical gardens or native plant nurseries for sourcing advice
  • Look for seed collection events or plant swaps in your area
  • Consider starting with the broader Ipomopsis aggregata species if this specific subspecies proves elusive

A Word About Plant Names

Like many long-lived plant species, this scarlet gilia has collected quite a few scientific names over the years. Botanists have known it by various monikers including Gilia aggregata subspecies formosissima and several other combinations. Don’t let the name shuffling worry you—it’s just scientists doing their thing, constantly refining how we understand plant relationships.

The Bottom Line

While Ipomopsis aggregata formosissima might require a bit more detective work to grow successfully compared to common garden center fare, that’s part of its charm. Native plant gardening often involves becoming a bit of a plant explorer, connecting with local experts, and learning about your regional flora in ways that mass-market gardening simply can’t offer.

If you’re up for the adventure of growing something truly special and regionally appropriate, this scarlet gilia subspecies could be exactly what your native plant garden has been waiting for. Just remember: the journey of discovering and growing lesser-known natives is often just as rewarding as the destination.

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