Case's Corydalis Plant Care
Corydalis caseana A.Gray
Updated · Sources · How we source care data
Corydalis caseana, also known as Sierra corydalis, Sierra fumewort, or fitweed, is a species of plant in the poppy family from the western United States.
Every 2–3 days
Partial to full shade
50–75°F
40–60%
At a glance
How do you care for Case's Corydalis?
Water Case's Corydalis every 2–3 days, letting the top layer of soil dry out between waterings, and give it partial to full shade. It prefers temperatures of 50–75°F (10–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
What Is the Case's Corydalis?
Case's Corydalis (Corydalis caseana) belongs to the Papaveraceae family within the Corydalis genus.
Case's Corydalis displays a spreading, low-growing perennial growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Case's Corydalis produces unique spurred flowers in shades of pink, purple, or yellow.
Leaf size: approximately 3 inches.
How Often Should You Water a Case's Corydalis?
Corydalis caseana requires watering every 2–3 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 2–3 days
Let soil partially dry between waterings
What Light Does the Case's Corydalis Need?
Case's Corydalis thrives in partial to full shade. The optimal light range is 100–1,000 lux. Avoid placing Case's Corydalis in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Partial to full shade
100–1,000 lux
What Temperature and Humidity Does the Case's Corydalis Prefer?
Corydalis caseana grows best at temperatures of 50–75°F. Case's Corydalis prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Case's Corydalis?
Moist, well-draining soil with added organic matter like compost or peat moss. Good drainage is essential for Case's Corydalis to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Case's Corydalis?
Feed Case's Corydalis 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 Case's Corydalis?
Divide and 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 Case's Corydalis?
Case's Corydalis can be propagated through seeds, division of rhizomes. Similar propagation techniques also apply to caucasian corydalis plant care, which shares the same genus.
Is the Case's Corydalis Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Case's Corydalis, 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 Case's Corydalis?
Case's Corydalis is susceptible to slugs, snails, aphids. 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 Case's Corydalis Need?
Case's Corydalis grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Case's Corydalis as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Case's Corydalis 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 Corydalis genus — compare its care with other Corydalis species on PlantoScan.
Corydalis is part of the Papaveraceae plant family — browse all Papaveraceae genera and species.
Case's Corydalis copes with lower light than most plants — browse the full list of low-light plants.
More Corydalis Species
Other Corydalis species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Corydalis caseana A.Gray, family Papaveraceae (first published in Proc. Amer. Acad. Arts 10: 69 (1874)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Case's Corydalis, 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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