Smallflower Corydalis Plant Care
Corydalis micrantha (Engelm. & A.Gray) A.Gray ex J.M.Coult.
Updated · Sources · How we source care data
Corydalis micrantha is a species of flowering plant in the poppy family (Papaveraceae), native to the United States. Common names include smallflower fumewort, slender corydalis, southern corydalis, and golden corydalis.
Every 2–3 days
Partial to full shade
50–75°F
40–60%
At a glance
How do you care for Smallflower Corydalis?
Water Smallflower 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.
Where Is the Smallflower Corydalis Native To?
What Is the Smallflower Corydalis?
Smallflower Corydalis (Corydalis micrantha) belongs to the Papaveraceae family within the Corydalis genus. Smallflower Corydalis is native to the United States.
Smallflower Corydalis displays a spreading, low-growing perennial growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Smallflower Corydalis produces unique spurred flowers in shades of pink, purple, or yellow.
Leaf size: approximately 3 inches.
How Often Should You Water a Smallflower Corydalis?
Corydalis micrantha 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 Smallflower Corydalis Need?
Smallflower Corydalis thrives in partial to full shade. The optimal light range is 100–1,000 lux. Avoid placing Smallflower 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 Smallflower Corydalis Prefer?
Corydalis micrantha grows best at temperatures of 50–75°F. Smallflower Corydalis prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Smallflower Corydalis?
Moist, well-draining soil with added organic matter like compost or peat moss. Good drainage is essential for Smallflower Corydalis to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Smallflower Corydalis?
Feed Smallflower 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 Smallflower 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 Smallflower Corydalis?
Smallflower 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 Smallflower Corydalis Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Smallflower 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 Smallflower Corydalis?
Smallflower 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 Smallflower Corydalis Need?
Smallflower Corydalis grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Smallflower Corydalis is native to the United States. In cooler regions, grow Smallflower Corydalis as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Smallflower 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.
Smallflower 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 micrantha (Engelm. & A.Gray) A.Gray ex J.M.Coult., family Papaveraceae (first published in Bot. Gaz. 11: 189 (1886)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Smallflower 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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