Slender False Sunflower Plant Care
Heliopsis gracilis Nutt.
Updated · Sources · How we source care data
Heliopsis gracilis is a North American species of flowering plant in the family Asteraceae, known by the common names costal plain oxeye, costal plain sunflower-everlasting, smooth oxeye and pinewoods oxeye. It is native to the southeastern and south-central United States from eastern Texas to South Carolina.
Every 7–10 days
Full sun to partial shade
60–80°F
40–70%
At a glance
How do you care for Slender False Sunflower?
Water Slender False Sunflower 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 60–80°F (16–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Slender False Sunflower Native To?
What Is the Slender False Sunflower?
Slender False Sunflower (Heliopsis gracilis) belongs to the Asteraceae family within the Heliopsis genus. Slender False Sunflower is native to the southeastern and south-central United States from eastern Texas to South Carolina.
Slender False Sunflower displays an upright, bushy perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Slender False Sunflower produces bright yellow daisy-like flowers with brown centers.
Leaf size: approximately 5 inches.
How Often Should You Water a Slender False Sunflower?
Heliopsis gracilis 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 Slender False Sunflower Need?
Slender False Sunflower thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Slender False Sunflower Prefer?
Heliopsis gracilis grows best at temperatures of 60–80°F. Slender False Sunflower prefers humidity levels of 40–70%.
Temperature
60–80°F
Humidity
40–70%
What Soil Mix Works Best for a Slender False Sunflower?
Well-draining, fertile soil with added compost for nutrients. Good drainage is essential for Slender False Sunflower to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Slender False Sunflower?
Feed Slender False Sunflower 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 Slender False Sunflower?
Divide and replant every 3-4 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 Slender False Sunflower?
Slender False Sunflower can be propagated through seeds, division of clumps. Similar propagation techniques also apply to annual false sunflower plant care, which shares the same genus.
Is the Slender False Sunflower Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Slender False Sunflower, 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 Slender False Sunflower?
Slender False Sunflower 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 Slender False Sunflower Need?
Slender False Sunflower grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Slender False Sunflower is native to the southeastern and south-central United States from eastern Texas to South Carolina. In cooler regions, grow Slender False Sunflower as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Slender False Sunflower 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 Heliopsis genus — compare its care with other Heliopsis species on PlantoScan.
Heliopsis is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Slender False Sunflower thrives in bright light and direct sun — see other bright-light plants.
More Heliopsis Species
Other Heliopsis species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Heliopsis gracilis Nutt., family Asteraceae (first published in Trans. Amer. Philos. Soc. , ser. 2, 7: 353 (1840)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Slender False Sunflower, 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 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.
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