Shortleaf Thistle Plant Care
Cirsium brevifolium Nutt.
Updated · Sources · How we source care data
Cirsium brevifolium is a North American species of plants in the tribe Cardueae within the family Asteraceae. Common name is Palouse thistle.
Every 7–14 days
Full sun
60–80°F
40–70%
At a glance
How do you care for Shortleaf Thistle?
Water Shortleaf Thistle every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun. 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 Shortleaf Thistle Native To?
What Is the Shortleaf Thistle?
Shortleaf Thistle (Cirsium brevifolium) belongs to the Asteraceae family within the Cirsium genus. Shortleaf Thistle is native to the northwestern United States, in the States of Washington, Oregon, and Idaho.
Shortleaf Thistle displays a tall, spiky perennial growth habit, reaching up to 4 ft tall with a spread of approximately 2 ft. Shortleaf Thistle produces showy purple or pink thistle-like flower heads.
Leaf size: approximately 12 inches.
How Often Should You Water a Shortleaf Thistle?
Cirsium brevifolium requires watering every 7–14 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 7–14 days
Let soil partially dry between waterings
What Light Does the Shortleaf Thistle Need?
Shortleaf Thistle thrives in full sun.
Light Requirement
Full sun
What Temperature and Humidity Does the Shortleaf Thistle Prefer?
Cirsium brevifolium grows best at temperatures of 60–80°F. Shortleaf Thistle prefers humidity levels of 40–70%.
Temperature
60–80°F
Humidity
40–70%
What Soil Mix Works Best for a Shortleaf Thistle?
Well-draining sandy loam with added organic matter. Good drainage is essential for Shortleaf Thistle to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Shortleaf Thistle?
Feed Shortleaf Thistle 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 Shortleaf Thistle?
Divide and replant 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 Shortleaf Thistle?
Shortleaf Thistle can be propagated through seeds. Similar propagation techniques also apply to creeping thistle plant care, which shares the same genus.
Is the Shortleaf Thistle Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Shortleaf Thistle, 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 Shortleaf Thistle?
Shortleaf Thistle is susceptible to aphids, thrips, spider mites. 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 Shortleaf Thistle Need?
Shortleaf Thistle grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Shortleaf Thistle is native to the northwestern United States, in the States of Washington, Oregon, and Idaho. In cooler regions, grow Shortleaf Thistle as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Shortleaf Thistle 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 Cirsium genus — compare its care with other Cirsium species on PlantoScan.
Cirsium is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Shortleaf Thistle thrives in bright light and direct sun — see other bright-light plants.
More Cirsium Species
Other Cirsium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Cirsium brevifolium Nutt., family Asteraceae (first published in Trans. Amer. Philos. Soc. , ser. 2, 7: 421 (1841)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Shortleaf Thistle, 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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