Swamp Aster Plant Care
Eurybia paludosa (Aiton) G.L.Nesom
Updated · Sources · How we source care data
Eurybia paludosa, commonly known as the southern swamp aster or Savannah grass-leaved aster, is an herbaceous perennial in the family Asteraceae. It is native to the southeastern United States where it is confined to the Carolinas and the states of Georgia and Florida.
Every 7–10 days
Full sun to partial shade
50–75°F
40–70%
At a glance
How do you care for Swamp Aster?
Water Swamp Aster every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–75°F (10–24°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Swamp Aster Native To?
What Is the Swamp Aster?
Swamp Aster (Eurybia paludosa) belongs to the Asteraceae family within the Eurybia genus. Swamp Aster is native to the southeastern United States.
Swamp Aster displays a clumping perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1.5 ft. Swamp Aster produces daisy-like flowers in various colors.
Leaf size: approximately 4 inches.
How Often Should You Water a Swamp Aster?
Eurybia paludosa requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Swamp Aster Need?
Swamp Aster thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Swamp Aster Prefer?
Eurybia paludosa grows best at temperatures of 50–75°F. Swamp Aster prefers humidity levels of 40–70%.
Temperature
50–75°F
Humidity
40–70%
What Soil Mix Works Best for a Swamp Aster?
Well-draining sandy loam with added organic matter. Good drainage is essential for Swamp Aster to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Swamp Aster?
Feed Swamp Aster every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Swamp Aster?
Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Swamp Aster?
Swamp Aster can be propagated through division, seeds. Similar propagation techniques also apply to compact aster plant care, which shares the same genus.
Is the Swamp Aster Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Swamp Aster, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Swamp Aster?
Swamp Aster is susceptible to aphids, spider mites, powdery mildew. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Swamp Aster Need?
Swamp Aster grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Swamp Aster is native to the southeastern United States. In cooler regions, grow Swamp Aster as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Swamp Aster is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Eurybia genus — compare its care with other Eurybia species on PlantoScan.
Eurybia is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Swamp Aster thrives in bright light and direct sun — see other bright-light plants.
More Eurybia Species
Other Eurybia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Eurybia paludosa (Aiton) G.L.Nesom, family Asteraceae (first published in Phytologia 77: 261 (1995)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Swamp Aster, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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