Photo: Chris RosmalenCC BY 4.0Image: PlantoScanresized / cropped
Linaria purpurea Plant Care
Linaria purpurea (L.) Mill.
Updated · Sources · How we source care data
Linaria purpurea or purple toadflax is a purple-flowered plant native to Italy, part of the plantain family (Plantaginaceae). It is sometimes planted in gardens and is also an introduced weed in North America and other parts of Europe.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Linaria purpurea?
Water Linaria purpurea 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 Linaria purpurea Native To?
What Is the Linaria purpurea?
Linaria purpurea (Linaria purpurea) belongs to the Plantaginaceae family within the Linaria genus. Linaria purpurea is native to Italy, part of the plantain family (Plantaginaceae).
Linaria purpurea displays an upright, bushy perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Linaria purpurea produces showy spikes of tubular flowers in various colors.
Leaf size: approximately 2 inches.
How Often Should You Water a Linaria purpurea?
Linaria purpurea 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 Linaria purpurea Need?
Linaria purpurea thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Linaria purpurea Prefer?
Linaria purpurea grows best at temperatures of 50–80°F. Linaria purpurea prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Linaria purpurea?
Well-draining sandy loam with added organic matter. Good drainage is essential for Linaria purpurea to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Linaria purpurea?
Feed Linaria purpurea 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 Linaria purpurea?
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 Linaria purpurea?
Linaria purpurea can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to amethyst toadflax plant care, which shares the same genus.
Is the Linaria purpurea Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Linaria purpurea, 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 Linaria purpurea?
Linaria purpurea 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 Linaria purpurea Need?
Linaria purpurea grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Linaria purpurea is native to Italy, part of the plantain family (Plantaginaceae). In cooler regions, grow Linaria purpurea as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Linaria purpurea 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 Linaria genus — compare its care with other Linaria species on PlantoScan.
Linaria is part of the Plantaginaceae plant family — browse all Plantaginaceae genera and species.
Linaria purpurea thrives in bright light and direct sun — see other bright-light plants.
More Linaria Species
Other Linaria species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Linaria purpurea (L.) Mill., family Plantaginaceae (first published in Gard. Dict. ed. 8 : n.º 5 (1768)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Linaria purpurea, 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: Chris Rosmalen, CC BY 4.0, 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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