Photo: Walter SiegmundCC BY-SA 3.0via Wikimedia Commonsresized / cropped
Agoseris lacera Plant Care
Tragopogon glaucus Steud.
Updated · Sources · How we source care data
Agoseris glauca is a species of flowering plant in the family Asteraceae known by the common names false dandelion, pale agoseris, prairie agoseris, and short-beaked agoseris. It is native to western North America.
Every 7–10 days
Full sun to partial shade
60–75°F
40–60%
At a glance
How do you care for Agoseris lacera?
Water Agoseris lacera 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 60–75°F (16–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Agoseris lacera Native To?
What Is the Agoseris lacera?
Agoseris lacera (Tragopogon glaucus) belongs to the Asteraceae family within the Tragopogon genus. Agoseris lacera is native to western North America. Agoseris lacera is also known as Agoseris lapathifolia, Agoseris longirostris, Agoseris longula.
Agoseris lacera displays an upright, clumping perennial growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Agoseris lacera produces bright yellow daisy-like flowers.
Leaf size: approximately 8 inches.
How Often Should You Water a Agoseris lacera?
Tragopogon glaucus 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 Agoseris lacera Need?
Agoseris lacera thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Agoseris lacera Prefer?
Tragopogon glaucus grows best at temperatures of 60–75°F. Agoseris lacera prefers humidity levels of 40–60%.
Temperature
60–75°F
Humidity
40–60%
What Soil Mix Works Best for a Agoseris lacera?
Well-draining sandy loam with added organic matter. Good drainage is essential for Agoseris lacera to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Agoseris lacera?
Feed Agoseris lacera 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 Agoseris lacera?
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 Agoseris lacera?
Agoseris lacera can be propagated through seeds. Similar propagation techniques also apply to fl. carniol. ed. 2 plant care, which shares the same genus.
Is the Agoseris lacera Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Agoseris lacera, 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 Agoseris lacera?
Agoseris lacera is susceptible to aphids, whiteflies, spider mites. 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 Agoseris lacera Need?
Agoseris lacera grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Agoseris lacera is native to western North America. In cooler regions, grow Agoseris lacera as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Agoseris lacera 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 Tragopogon genus — compare its care with other Tragopogon species on PlantoScan.
Tragopogon is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Agoseris lacera 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: Tragopogon glaucus Steud., family Asteraceae (first published in Nomencl. Bot. : 843 (1821)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Agoseris lacera, 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 13a, 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.
Identify Plants Like the
Agoseris lacera Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species