North America Native Plant

Skyblue Aster

Botanical name: Symphyotrichum oolentangiense var. poaceum

USDA symbol: SYOOP

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Aster azureus Lindl. var. poaceus (Burgess) Fernald (ASAZP)  âš˜  Aster oolentangiensis Riddell var. poaceus (Burgess) A.G. Jones (ASOOP)  âš˜  Aster poaceus Burgess (ASPO8)  âš˜  Aster vernalis Engelm. ex Burgess (ASVE4)   

Skyblue Aster: A Native Prairie Gem for Southern Gardens If you’re looking to add authentic native beauty to your southern garden, the skyblue aster (Symphyotrichum oolentangiense var. poaceum) might just be the prairie charmer you’ve been searching for. This perennial wildflower represents a specific variety within the beloved skyblue aster ...

Skyblue Aster: A Native Prairie Gem for Southern Gardens

If you’re looking to add authentic native beauty to your southern garden, the skyblue aster (Symphyotrichum oolentangiense var. poaceum) might just be the prairie charmer you’ve been searching for. This perennial wildflower represents a specific variety within the beloved skyblue aster family, bringing a touch of wild prairie magic to cultivated spaces.

What Makes This Plant Special?

The skyblue aster is a true native son of the American prairie, classified as a forb herb—essentially a non-woody perennial plant that dies back to ground level each winter but returns faithfully each spring. Unlike shrubs or trees, this plant puts all its energy into gorgeous blooms and foliage rather than building woody stems.

What sets this particular variety apart is its authentic regional heritage. You won’t find this exact form growing wild in just any old meadow—it’s specifically adapted to the unique conditions of the south-central United States.

Where Does It Call Home?

This native beauty has deep roots in the American heartland, naturally occurring across Arkansas, Missouri, Oklahoma, Tennessee, and Texas. It’s perfectly adapted to the climate and soil conditions of these regions, having evolved alongside local wildlife and weather patterns over thousands of years.

A Plant with Many Names

Like many long-established native plants, the skyblue aster has collected quite a few names over the years. Botanists have previously known it as Aster azureus var. poaceus, Aster oolentangiensis var. poaceus, Aster poaceus, and Aster vernalis. Don’t let all these scientific name changes confuse you—it’s the same lovely plant, just with evolving botanical understanding.

Should You Grow It?

Here’s where we need to be honest: specific growing information for this particular variety is quite limited in available horticultural literature. This isn’t necessarily a bad thing—it just means this plant hasn’t been extensively studied or widely cultivated compared to some of its showier cousins.

As a native plant, it offers several potential advantages:

  • Naturally adapted to local climate conditions
  • Likely to support regional wildlife and pollinators
  • Should require less water and maintenance once established
  • Contributes to regional biodiversity

However, the limited cultivation information means you’d be somewhat pioneering if you choose to grow it. This could be exciting for adventurous gardeners who enjoy experimenting with lesser-known natives, but might be frustrating for those who prefer well-documented, predictable plants.

Garden Design Considerations

Given its prairie heritage, this skyblue aster would likely feel most at home in naturalized areas, prairie restoration projects, or wildflower meadows. Its native status suggests it would pair beautifully with other regional native plants, creating authentic local ecosystems in your backyard.

Consider incorporating it into:

  • Native plant gardens
  • Prairie restoration areas
  • Wildlife habitat gardens
  • Low-maintenance naturalized spaces

Growing Tips and Care

While specific cultivation details for this variety are scarce, its native range suggests it’s adapted to the growing conditions typical of the south-central United States. As with most prairie natives, it likely prefers:

  • Full sun to partial sun conditions
  • Well-draining soils
  • Minimal supplemental watering once established
  • Little to no fertilization

Since it’s a perennial, expect it to return each year, likely growing stronger and more established with time.

The Bottom Line

The skyblue aster represents an opportunity to grow something truly special and regionally authentic. While the limited available growing information means you’d be somewhat pioneering in your cultivation efforts, this could be incredibly rewarding for native plant enthusiasts.

If you’re passionate about supporting local ecosystems and don’t mind a bit of horticultural adventure, this native beauty could be a wonderful addition to your garden. Just be prepared to observe and learn as you go, since you’ll be working with a plant that hasn’t been extensively documented in cultivation guides.

For gardeners who prefer well-documented plants with established care requirements, you might consider starting with other members of the skyblue aster family that have more readily available growing information, while keeping this special variety in mind for future experimentation.

Skyblue Aster

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

Symphyotrichum Nees - aster

Species

Symphyotrichum oolentangiense (Riddell) G.L. Nesom - skyblue aster

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