Photo: Pavel KaclCC BY 4.0via iNaturalistresized / cropped
Thlaspi montanum Plant Care
Noccaea montana (L.) F.K.Mey.
Updated · Sources · How we source care data
With its silvery-green, lance-shaped leaves covered in tiny white hairs, this plant originating from Europe is easily recognizable as a must-have for plant collectors. Noccaea montana's striking foliage adds a unique texture and color to any garden, making it a sought-after addition for those looking to diversify their collection.
Every 3–7 days
Full sun to partial shade
50–70°F
40–60%
At a glance
How do you care for Thlaspi montanum?
Water Thlaspi montanum every 3–7 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–70°F (10–21°C) and 40–60% humidity. Fertilize it every month during the growing season.
Where Is the Thlaspi montanum Native To?
What Is the Thlaspi montanum?
Thlaspi montanum (Noccaea montana) belongs to the Brassicaceae family within the Noccaea genus. Thlaspi montanum is native to North America were formerly treated as Noccea montana. Thlaspi montanum is also known as Thlaspi alpestre.
Thlaspi montanum displays a low rosette, spreading growth habit, reaching up to tall with a spread of approximately 1 ft. Thlaspi montanum produces small clusters of white or yellow flowers.
Leaf size: approximately 2 inches.
How Often Should You Water a Thlaspi montanum?
Noccaea montana requires watering every 3–7 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 3–7 days
Let soil partially dry between waterings
What Light Does the Thlaspi montanum Need?
Thlaspi montanum thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Thlaspi montanum Prefer?
Noccaea montana grows best at temperatures of 50–70°F. Thlaspi montanum prefers humidity levels of 40–60%.
Temperature
50–70°F
Humidity
40–60%
What Soil Mix Works Best for a Thlaspi montanum?
Well-draining loamy soil with added organic matter for nutrients. Good drainage is essential for Thlaspi montanum to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Thlaspi montanum?
Feed Thlaspi montanum every month 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 month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Thlaspi montanum?
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 Thlaspi montanum?
Thlaspi montanum can be propagated through seeds, division. Similar propagation techniques also apply to perfoliate pennycress plant care, which shares the same genus.
Is the Thlaspi montanum Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Thlaspi montanum, 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 Thlaspi montanum?
Thlaspi montanum is susceptible to aphids, cabbage worms, flea beetles. 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 Thlaspi montanum Need?
Thlaspi montanum grows outdoors in USDA Zone 4a – 8b. It survives winters down to planting zone 4a. Thlaspi montanum is native to North America were formerly treated as Noccea montana.
Hardiness Zone
Zone 4a – 8b
Keep exploring plants
Thlaspi montanum 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 Noccaea genus — compare its care with other Noccaea species on PlantoScan.
Noccaea is part of the Brassicaceae plant family — browse all Brassicaceae genera and species.
Thlaspi montanum thrives in bright light and direct sun — see other bright-light plants.
More Noccaea Species
Other Noccaea species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Noccaea montana (L.) F.K.Mey., family Brassicaceae (first published in Feddes Repert. 84: 461 (1973)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Thlaspi montanum, 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: Pavel Kacl, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 4a – 8b, estimated from the plant's typical growing conditions.
- 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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