Round-leaved Fluellen Plant Care
Kickxia spuria (L.) Dumort.
Updated · Sources · How we source care data
Kickxia spuria is a species of flowering plant in the family Plantaginaceae known by several common names, including roundleaf cancerwort and round-leaved fluellen. It is native to Europe and Asia, but it is present on other continents as an introduced species, and sometimes a noxious weed.
Every 5–7 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Round-leaved Fluellen?
Water Round-leaved Fluellen every 5–7 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 Round-leaved Fluellen Native To?
- Albania
- Austria
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Croatia
- Cyprus
- Czechia
- Denmark
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Iceland
- Ireland
- Italy
- Latvia
- Lithuania
- Luxembourg
- Malta
- Moldova
- Montenegro
- North Macedonia
- Norway
- Poland
- Portugal
- Romania
- Russia
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
- Switzerland
- The Netherlands
- Ukraine
- United Kingdom
What Is the Round-leaved Fluellen?
Round-leaved Fluellen (Kickxia spuria) belongs to the Plantaginaceae family within the Kickxia genus. Round-leaved Fluellen is native to Europe and Asia. Round-leaved Fluellen is also known as Native Toadflax.
Round-leaved Fluellen displays a low-growing, spreading perennial growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Round-leaved Fluellen produces small tubular flowers in shades of purple, pink, or white.
Leaf size: approximately 2 inches.
How Often Should You Water a Round-leaved Fluellen?
Kickxia spuria requires watering every 5–7 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 5–7 days
Let soil partially dry between waterings
What Light Does the Round-leaved Fluellen Need?
Round-leaved Fluellen thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Round-leaved Fluellen Prefer?
Kickxia spuria grows best at temperatures of 50–80°F. Round-leaved Fluellen prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Round-leaved Fluellen?
Well-draining soil with high organic content. Good drainage is essential for Round-leaved Fluellen to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Round-leaved Fluellen?
Feed Round-leaved Fluellen 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 Round-leaved Fluellen?
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 Round-leaved Fluellen?
Round-leaved Fluellen can be propagated through seeds, division of rootball. Similar propagation techniques also apply to italian toadflax plant care, which shares the same genus.
Is the Round-leaved Fluellen Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Round-leaved Fluellen, 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 Round-leaved Fluellen?
Round-leaved Fluellen 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 Round-leaved Fluellen Need?
Round-leaved Fluellen grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Round-leaved Fluellen is native to Europe and Asia. In cooler regions, grow Round-leaved Fluellen as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Round-leaved Fluellen 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 Kickxia genus — compare its care with other Kickxia species on PlantoScan.
Kickxia is part of the Plantaginaceae plant family — browse all Plantaginaceae genera and species.
Round-leaved Fluellen 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: Kickxia spuria (L.) Dumort., family Plantaginaceae (first published in Fl. Belg. : 35 (1827)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Round-leaved Fluellen, 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 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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