Elliott's aster (Symphyotrichum elliottii) is a tall native perennial of the southeastern United States Atlantic coastal plain, found in freshwater marshes, wet meadows, and pond margins. It produces dense masses of pink-rayed, daisy-type heads whose disk florets progress from pale yellow to pink to brown as they age, making it one of the most visually active late-season natives for consistently wet sites.
Plants spread by rhizomes and can form colonies; divide every two to three years to maintain vigor and control spread. Full sun produces the sturdiest, most self-supporting stems - shaded plants tend to lean. It is well suited to rain garden edges, stormwater swales, and wet detention areas where most perennials fail. Soil pH is not critical as long as moisture is consistently high.
NatureServe rates this species as Apparently Secure globally but flags it as a conservation concern in North Carolina, South Carolina, and Virginia due to ongoing wetland habitat loss. Siting it in appropriate wet-garden conditions provides direct late-season forage for native bees and migrating monarchs while supporting regional plant conservation.
These dates are for Zone 6b. Enter your ZIP to time every job to your own frost dates.
- watch · Any time in fallTrack peak late-season bloom and observe native bee and monarch activity; note seed head development for any planned propagation.
- cut · Any time in fallAfter seed heads have dispersed, cut stems to within a few inches of the ground or leave standing through winter for bird and insect habitat.
- plant · Feb 27Transplant container-grown plants or divided rhizome clumps into permanently moist to wet soil once frost risk has passed.
- cut · Any time in springCut dead stems from the previous season to near ground level before new shoots emerge.
- watch · Any time in summerCheck crowded stems for powdery mildew on lower foliage during warm, humid periods. Thin interior stems to improve airflow.
- watch · Any time in summerInspect for aster yellows - look for yellowed, distorted, or stunted new growth. Remove affected plants and control leafhopper populations to limit spread.
- watch · Any time in summerMonitor for rhizome spread beyond intended boundaries; use a spade to sever and remove unwanted runners.
Problems & troubleshooting
Common problems
Aster Yellows
Deformed, greenish flowers, stunted growth, and yellowed foliage. Flower centers may produce tufts of leafy growth instead of normal petals.
No cure. Remove and destroy infected plants immediately to stop spread. Control leafhoppers, which transmit the disease, and remove nearby weed hosts.
Powdery mildew
White or grey powdery coating on leaves - usually starting on older growth in humid conditions or when nights cool.
Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.
Rust
Orange to brown raised pustules on the undersides of leaves, with yellow spotting on the upper surface. Heavy infections cause leaves to yellow and drop.
Remove and destroy infected leaves. Avoid overhead watering and improve air circulation. Apply a sulfur or copper-based fungicide if it spreads. Clear plant debris in fall.
Fungal leaf spot
Brown or purplish spots on the leaves, often ringed with a yellow halo, that spread and merge in warm, humid, or wet weather; heavily spotted leaves yellow and drop early.
Pick off spotted leaves and clear fallen debris to remove overwintering spores. Improve air circulation by thinning, and water at the base so foliage dries quickly. If it persists, apply a copper- or sulfur-based fungicide at the first sign.