Alkali Aster
Symphyotrichum frondosum
Last reviewed: July 2026
Light
full sun
Water
medium
Size
12"–36" H × 12"–24" W
Bloom
Jul, Aug, Sep
Native to
AZ, CA, CO, ID and 6 more states
Pollinators
bees, butterflies
Browse plants for this ecoregion
Symphyotrichum frondosum is a native aster that produces clusters of small white or pale purple daisy-like flowers from summer through early fall. This compact perennial forms neat clumps with fine-textured foliage and reaches 1-3 feet in height.
In an HOA neighborhood
Alkali Aster is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.
Works well in: foundation, mid zone.
- May look sparse or weedy in early spring
- Some HOAs prefer non-native ornamentals
Wildlife value
The late-season blooms provide crucial nectar for bees and butterflies when many other flowers have finished. Seeds also feed songbirds in fall and winter.
Common questions
- How much sun does Alkali Aster need?
- Alkali Aster grows best in full sun conditions.
- When does Alkali Aster bloom?
- Alkali Aster blooms in July, August, and September.
- Where is Alkali Aster native?
- Alkali Aster (Symphyotrichum frondosum) is native to AZ, CA, CO, ID and 6 more states, per the USDA PLANTS Database and regional native plant society lists.
- What pollinators does Alkali Aster attract?
- Alkali Aster draws bees and butterflies.
- Is Alkali Aster HOA-friendly?
- Alkali Aster is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Alkali Aster? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz