Photo: Quinten WiegersmaCC BY 4.0via Wikimedia Commonsresized / cropped
Northern Bog Aster Plant Care
Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve
Updated · Sources · How we source care data
Symphyotrichum boreale is known for its unique lance-shaped leaves that form dense clusters. Originally hailing from North America, this plant is highly sought after by collectors for its striking purple or blue flowers that bloom in late summer.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Northern Bog Aster?
Water Northern Bog 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 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Northern Bog Aster Native To?
What Is the Northern Bog Aster?
Northern Bog Aster (Symphyotrichum boreale) belongs to the Asteraceae family within the Symphyotrichum genus. Northern Bog Aster is native to North America. Northern Bog Aster is also known as Boreal Bog Aster, Aster laxifolius, Aster salicifolius.
Northern Bog Aster displays an upright, bushy perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Northern Bog Aster produces daisy-like flowers in various colors like purple, blue, pink, and white.
Leaf size: approximately 4 inches.
How Often Should You Water a Northern Bog Aster?
Symphyotrichum boreale 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 Northern Bog Aster Need?
Northern Bog Aster thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Northern Bog Aster Prefer?
Symphyotrichum boreale grows best at temperatures of 50–80°F. Northern Bog Aster prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Northern Bog Aster?
Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Northern Bog Aster to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Northern Bog Aster?
Feed Northern Bog 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 Northern Bog 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 Northern Bog Aster?
Northern Bog Aster can be propagated through division, stem cuttings. Similar propagation techniques also apply to pineywoods aster plant care, which shares the same genus.
Is the Northern Bog Aster Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Northern Bog 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 Northern Bog Aster?
Northern Bog 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 Northern Bog Aster Need?
Northern Bog Aster grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Northern Bog Aster is native to North America. In cooler regions, grow Northern Bog Aster as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Northern Bog 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 Symphyotrichum genus — compare its care with other Symphyotrichum species on PlantoScan.
Symphyotrichum is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Northern Bog Aster thrives in bright light and direct sun — see other bright-light plants.
More Symphyotrichum Species
Other Symphyotrichum species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve, family Asteraceae (first published in Taxon 31: 358 (1982)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Northern Bog 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.
- Photo: Quinten Wiegersma, CC BY 4.0, Wikimedia Commons — original.
- 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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