Collinsonia anisata Plant Care
Collinsonia anisata Sims
Updated · Sources · How we source care data
Collinsonia anisata, commonly known as southern horsebalm and anise horsebalm, is a species of flowering plant in the mint family (Lamiaceae). It is endemic to eastern North America, where it occurs in rich, mesic forests and woodland habitats.
Every 5–7 days
Partial shade to full sun
50–80°F
40–70%
At a glance
How do you care for Collinsonia anisata?
Water Collinsonia anisata every 5–7 days, letting the top layer of soil dry out between waterings, and give it partial shade to full sun. It prefers temperatures of 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Collinsonia anisata Native To?
What Is the Collinsonia anisata?
Collinsonia anisata (Collinsonia anisata) belongs to the Lamiaceae family within the Collinsonia genus. Collinsonia anisata is native to eastern North America.
Collinsonia anisata displays an upright, spreading perennial growth habit, reaching up to 2.5 ft tall with a spread of approximately 1.5 ft. Collinsonia anisata produces small tubular flowers in shades of white, pink, or purple.
Leaf size: approximately 4 inches.
How Often Should You Water a Collinsonia anisata?
Collinsonia anisata requires watering every 5–7 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 5–7 days
Let soil partially dry between waterings
What Light Does the Collinsonia anisata Need?
Collinsonia anisata thrives in partial shade to full sun.
Light Requirement
Partial shade to full sun
What Temperature and Humidity Does the Collinsonia anisata Prefer?
Collinsonia anisata grows best at temperatures of 50–80°F. Collinsonia anisata prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Collinsonia anisata?
Well-draining loamy soil with added organic matter for moisture retention. Good drainage is essential for Collinsonia anisata to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Collinsonia anisata?
Feed Collinsonia anisata 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 Collinsonia anisata?
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 Collinsonia anisata?
Collinsonia anisata can be propagated through seeds, division of clumps, stem cuttings. Similar propagation techniques also apply to richweed plant care, which shares the same genus.
Is the Collinsonia anisata Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Collinsonia anisata, 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 Collinsonia anisata?
Collinsonia anisata is susceptible to aphids, spider mites, whiteflies. 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 Collinsonia anisata Need?
Collinsonia anisata grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Collinsonia anisata is native to eastern North America. In cooler regions, grow Collinsonia anisata as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Collinsonia anisata 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 Collinsonia genus — compare its care with other Collinsonia species on PlantoScan.
Collinsonia is part of the Lamiaceae plant family — browse all Lamiaceae genera and species.
Collinsonia anisata thrives in bright light and direct sun — see other bright-light plants.
More Collinsonia Species
Other Collinsonia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Collinsonia anisata Sims, family Lamiaceae (first published in Bot. Mag. 13: t. 1213 (1809)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Collinsonia anisata, 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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