Thalictrum cooleyi Plant Care
Thalictrum cooleyi H.E.Ahles
Updated · Sources · How we source care data
Thalictrum cooleyi is a rare species of flowering plant in the buttercup family known by the common name Cooley's meadow-rue. It is native to the southeastern United States, where it is present in North Carolina, Georgia, and Florida.
Every 3–5 days
Part shade to full shade
50–75°F
40–70%
At a glance
How do you care for Thalictrum cooleyi?
Water Thalictrum cooleyi every 3–5 days, letting the top layer of soil dry out between waterings, and give it part shade to full shade. It prefers temperatures of 50–75°F (10–24°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Thalictrum cooleyi Native To?
What Is the Thalictrum cooleyi?
Thalictrum cooleyi (Thalictrum cooleyi) belongs to the Ranunculaceae family within the Thalictrum genus. Thalictrum cooleyi is native to the southeastern United States.
Thalictrum cooleyi displays an upright, clumping perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Thalictrum cooleyi produces fluffy clusters of tiny flowers in shades of purple, pink, or white.
Leaf size: approximately 6 inches.
How Often Should You Water a Thalictrum cooleyi?
Thalictrum cooleyi requires watering every 3–5 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 3–5 days
Let soil partially dry between waterings
What Light Does the Thalictrum cooleyi Need?
Thalictrum cooleyi thrives in part shade to full shade. The optimal light range is 100–500 lux. Avoid placing Thalictrum cooleyi in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Part shade to full shade
100–500 lux
What Temperature and Humidity Does the Thalictrum cooleyi Prefer?
Thalictrum cooleyi grows best at temperatures of 50–75°F. Thalictrum cooleyi prefers humidity levels of 40–70%.
Temperature
50–75°F
Humidity
40–70%
What Soil Mix Works Best for a Thalictrum cooleyi?
Moist, well-draining soil rich in organic matter. Good drainage is essential for Thalictrum cooleyi to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Thalictrum cooleyi?
Feed Thalictrum cooleyi 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 Thalictrum cooleyi?
Divide and repot every 3-4 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 Thalictrum cooleyi?
Thalictrum cooleyi can be propagated through division, seeds. Similar propagation techniques also apply to alpine meadow-rue plant care, which shares the same genus.
Is the Thalictrum cooleyi Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Thalictrum cooleyi, 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 Thalictrum cooleyi?
Thalictrum cooleyi is susceptible to aphids, slugs, snails. 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 Thalictrum cooleyi Need?
Thalictrum cooleyi grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Thalictrum cooleyi is native to the southeastern United States. In cooler regions, grow Thalictrum cooleyi as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Thalictrum cooleyi 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 Thalictrum genus — compare its care with other Thalictrum species on PlantoScan.
Thalictrum is part of the Ranunculaceae plant family — browse all Ranunculaceae genera and species.
Thalictrum cooleyi copes with lower light than most plants — browse the full list of low-light plants.
More Thalictrum Species
Other Thalictrum species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Thalictrum cooleyi H.E.Ahles, family Ranunculaceae (first published in Brittonia 11: 68 (1959)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Thalictrum cooleyi, 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.
Identify Plants Like the
Thalictrum cooleyi Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species