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Field Scabious Plant Care
Knautia arvensis (L.) Coult.
Updated · Sources · How we source care data
Knautia arvensis, commonly known as field scabious, is a herbaceous perennial species of flowering plant in the honeysuckle family Caprifoliaceae.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Field Scabious?
Water Field Scabious 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.
What Is the Field Scabious?
Field Scabious (Knautia arvensis) belongs to the Caprifoliaceae family within the Knautia genus. Field Scabious is also known as Blue Buttons, Knautia.
Field Scabious displays an upright, clumping perennial growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Field Scabious produces small, pincushion-like flowers in shades of pink, purple, or white.
Leaf size: approximately 4 inches.
How Often Should You Water a Field Scabious?
Knautia arvensis 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 Field Scabious Need?
Field Scabious thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Field Scabious Prefer?
Knautia arvensis grows best at temperatures of 50–80°F. Field Scabious prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Field Scabious?
Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Field Scabious to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Field Scabious?
Feed Field Scabious 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 Field Scabious?
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 Field Scabious?
Field Scabious can be propagated through seeds, division of clumps. Similar propagation techniques also apply to woodland scabious plant care, which shares the same genus.
Is the Field Scabious Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Field Scabious, 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 Field Scabious?
Field Scabious is susceptible to aphids, spider mites, leaf miners. 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 Field Scabious Need?
Field Scabious grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Field Scabious as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Field Scabious 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 Knautia genus (family Caprifoliaceae) — search all Knautia species in the plant lookup.
Field Scabious 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: Knautia arvensis (L.) Coult., family Caprifoliaceae (first published in Dipsac. 29.) — World Flora Online record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Field Scabious, 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: © Daniel Iseli, PlantoScan.
- 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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