Yellow corydalis
corydalis flavula
Also known as: ["Yellow fumewort","Yellow corydalis"]
Overview
A small herbaceous perennial native to eastern North America, known for its delicate yellow flowers and fern-like foliage.
Benefits & Perks
["fragrant flowers","wildlife attractant (bees, butterflies, birds)","shade tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Papaverales |
| Family: | Papaveraceae |
| Genus: | Corydalis |
| Botanical Name: | Corydalis flavula |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: woodland garden or shaded border
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"6–9"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, loamy soil with organic matter.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: As needed, typically every 6–12 months or after flowering.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary.
Care Details
Ideal Sunlight Coverage:
Bright indirect light for 4–6 hours daily; avoid direct sunlight which can scorch leaves.
Sunlight Tolerance Tips:
Acclimate gradually to new light conditions; place in a spot with filtered light; move indoors during extreme heat or cold.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
partial shade to full shade
Rotate plant weekly for even growth; use sheer curtains to filter direct light; avoid south-facing windows in summer.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly but allow soil to dry between waterings; avoid overwatering, especially in winter.
Soil
well-draining, humus-rich soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use a mix of potting soil and perlite; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Prefers 60–75°F (15–24°C); cooler temperatures (50–60°F) are tolerated in winter.
Avoid sudden temperature changes; maintain consistent room temperature; protect from drafts.
Fertilizing
every 4–6 weeks during spring and summer
Fertilize only when actively growing; flush soil occasionally to prevent salt buildup; use a balanced formula.
Propagation
Methods
Stem cuttings or division of rhizomes.
Step-by-Step Propagation Guide
- Take a healthy cutting.
- Apply rooting hormone if desired.
- Plant in moist medium.
- Keep warm and humid.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm, humid environment with indirect light; maintain consistent moisture.
Medium
Well-draining potting mix with perlite or sand.
Hormone
Rooting hormone can be used but is not strictly necessary.
Timeline
Roots may develop in 3–6 weeks; new growth in 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining soil.
Quick Tips
Use clean tools to prevent disease; maintain high humidity for faster rooting; keep out of direct sun.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips or cut stems just above a leaf node.
Pruning Plan
Prune to maintain shape and encourage bushier growth; remove dead or leggy stems.
Tools
Clean pruning shears or scissors.
Checklist
Sanitize tools; prune dead or damaged growth; shape as desired; dispose of clippings.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
Choose a pot one size larger (1–2 inches wider) than the current one.
Method
Remove plant gently; trim roots if crowded; place in a new pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for growth and soil refresh.
Checklist
Check root bound status; prepare new pot with drainage; use fresh soil mix; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water thoroughly; ensure proper drainage; adjust for season.
How to Apply Water Properly
Water directly at the root zone until water drains from the bottom; ensure excess water is removed to prevent standing moisture.
Watering Schedule Tips
Water when the top inch of soil feels dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, or stunted growth indicate temperature stress.
Cold Stress
Slows growth and can cause leaf drop if exposed to prolonged cold below 50°F.
Solution: Move to a warmer location; insulate pots during cold snaps; avoid drafty areas.
Hot Stress
Leaves may wilt or scorch if exposed to excessive heat above 85°F.
Solution: Provide shade during peak heat; increase humidity; ensure adequate ventilation.
Fertilizing Guide
Fertilizing Checklist
Check growth phase; dilute fertilizer; apply to moist soil; stop in winter.
Fertilizing Method
Use a balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring to early fall); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
ToxicCorydalis flavula is toxic to cats due to its alkaloid content, which can disrupt neurological and cardiovascular functions. Ingestion poses a significant health risk.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
ToxicThe alkaloids in Corydalis flavula can be toxic to dogs, affecting their nervous and cardiovascular systems. Ingestion can cause serious health issues.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
ToxicCorydalis flavula contains alkaloids that can have toxic effects on the human nervous system and cardiovascular system. Ingestion can lead to significant physiological disturbances.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Does Corydalis flavula attract pollinators?
A: Yes, it attracts bees, butterflies, and other pollinators with its fragrant flowers.
Q: Is Corydalis flavula suitable for shade gardens?
A: Yes, it thrives in partial to full shade conditions.
Q: How should Corydalis flavula be watered?
A: Water moderately, keeping the soil consistently moist but not waterlogged.
Quick Reference
| Family: | Papaveraceae |
| Care: | moderate |
| Light: | partial shade to full shade |
| Water: | every 7–10 days during activ |
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