Photo: Walter SiegmundCC BY-SA 3.0via Wikimedia Commonsresized / cropped
Aster engelmannii Plant Care
Eucephalus ledophyllus (A.Gray) Greene
Updated · Sources · How we source care data
Eucephalus ledophyllus is a North American species of flowering plant in the family Asteraceae known by the common name Cascade aster. It is native to Washington, Oregon and northern California in the United States, mostly in the Cascade Mountains. Some of the populations are inside national parks and monuments: Mount Rainier National Park, North Cascades National Park, and Mount St. Helens National Volcanic Monument.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Aster engelmannii?
Water Aster engelmannii 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 Aster engelmannii Native To?
What Is the Aster engelmannii?
Aster engelmannii (Eucephalus ledophyllus) belongs to the Asteraceae family within the Eucephalus genus. Aster engelmannii is native to Washington, Oregon and northern California in the United States, mostly in the Cascade Mountains.
Aster engelmannii displays a clumping perennial herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 1.5 ft. Aster engelmannii produces small daisy-like flowers in clusters of white, pink, or purple.
Leaf size: approximately 3 inches.
How Often Should You Water a Aster engelmannii?
Eucephalus ledophyllus 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 Aster engelmannii Need?
Aster engelmannii thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Aster engelmannii Prefer?
Eucephalus ledophyllus grows best at temperatures of 50–80°F. Aster engelmannii prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Aster engelmannii?
Well-draining sandy loam with added organic matter. Good drainage is essential for Aster engelmannii to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Aster engelmannii?
Feed Aster engelmannii 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 Aster engelmannii?
Divide and 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 Aster engelmannii?
Aster engelmannii can be propagated through seeds, division of clumps. Similar propagation techniques also apply to brewer's goldenrod plant care, which shares the same genus.
Is the Aster engelmannii Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Aster engelmannii, 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 Aster engelmannii?
Aster engelmannii is susceptible to aphids, spider mites, leafhoppers. 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 Aster engelmannii Need?
Aster engelmannii grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Aster engelmannii is native to Washington, Oregon and northern California in the United States, mostly in the Cascade Mountains. In cooler regions, grow Aster engelmannii as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Aster engelmannii 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 Eucephalus genus — compare its care with other Eucephalus species on PlantoScan.
Eucephalus is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Aster engelmannii thrives in bright light and direct sun — see other bright-light plants.
More Eucephalus Species
Other Eucephalus species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Eucephalus ledophyllus (A.Gray) Greene, family Asteraceae (first published in Pittonia 3(14): 55. 1896 [1 Jun 1896]) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Aster engelmannii, 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: Walter Siegmund, CC BY-SA 3.0, 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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