Photo: Thayne TuasonCC BY-SA 4.0via Wikimedia Commonsresized / cropped
Golden aster Plant Care
Pyrrocoma carthamoides Hook.
Updated · Sources · How we source care data
Haplopappus carthamoides
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Golden aster?
Water Golden 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 Golden aster Native To?
What Is the Golden aster?
Golden aster (Pyrrocoma carthamoides) belongs to the Asteraceae family within the Pyrrocoma genus. Golden aster is native to western North America from British Columbia to northeastern California to Wyoming. Golden aster is also known as Rocky mountain golden aster, Aster carthamoides, Haplopappus carthamoides.
Golden aster displays a clumping perennial herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Golden aster produces small yellow daisy-like flowers in clusters.
Leaf size: approximately 3 inches.
How Often Should You Water a Golden aster?
Pyrrocoma carthamoides 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 Golden aster Need?
Golden aster thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Golden aster Prefer?
Pyrrocoma carthamoides grows best at temperatures of 50–80°F. Golden aster prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Golden aster?
Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Golden aster to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Golden aster?
Feed Golden 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 Golden 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 Golden aster?
Golden aster can be propagated through seeds, division of root ball. Similar propagation techniques also apply to aster apargiodes plant care, which shares the same genus.
Is the Golden aster Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Golden 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 Golden aster?
Golden aster is susceptible to aphids, spider mites, whiteflies. 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 Golden aster Need?
Golden aster grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Golden aster is native to western North America from British Columbia to northeastern California to Wyoming. In cooler regions, grow Golden aster as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Golden 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 Pyrrocoma genus — compare its care with other Pyrrocoma species on PlantoScan.
Pyrrocoma is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Golden aster thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Pyrrocoma carthamoides Hook., family Asteraceae (first published in Fl. Bor.-Amer. 1(6): 307 (1833)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Golden 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: Thayne Tuason, CC BY-SA 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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