Green Horsemint Plant Care
Monarda viridissima Correll
Updated · Sources · How we source care data
Monarda viridissima is a species of flowering plant in the mint family. It is commonly known as green beebalm and Texas beebalm.
Every 7–10 days
Full sun to part shade
60–80°F
40–60%
At a glance
How do you care for Green Horsemint?
Water Green Horsemint every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to part shade. It prefers temperatures of 60–80°F (16–27°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
What Is the Green Horsemint?
Green Horsemint (Monarda viridissima) belongs to the Lamiaceae family within the Monarda genus.
Green Horsemint displays an upright, clump-forming perennial growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Green Horsemint produces showy tubular flowers in shades of pink, red, purple, or white.
Leaf size: approximately 4 inches.
How Often Should You Water a Green Horsemint?
Monarda viridissima requires watering every 7–10 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 7–10 days
Let soil partially dry between waterings
What Light Does the Green Horsemint Need?
Green Horsemint thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Green Horsemint Prefer?
Monarda viridissima grows best at temperatures of 60–80°F. Green Horsemint prefers humidity levels of 40–60%.
Temperature
60–80°F
Humidity
40–60%
What Soil Mix Works Best for a Green Horsemint?
Well-draining, fertile soil with a slightly acidic to neutral pH. Good drainage is essential for Green Horsemint to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Green Horsemint?
Feed Green Horsemint 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 Green Horsemint?
Divide 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 Green Horsemint?
Green Horsemint can be propagated through division, stem cuttings, seeds. Similar propagation techniques also apply to bee balm plant care, which shares the same genus.
Is the Green Horsemint Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Green Horsemint, 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 Green Horsemint?
Green Horsemint is susceptible to powdery mildew, spider mites, 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 Green Horsemint Need?
Green Horsemint grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Green Horsemint as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Green Horsemint 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 Monarda genus — compare its care with other Monarda species on PlantoScan.
Monarda is part of the Lamiaceae plant family — browse all Lamiaceae genera and species.
Green Horsemint thrives in bright light and direct sun — see other bright-light plants.
More Monarda Species
Other Monarda species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Monarda viridissima Correll, family Lamiaceae (first published in Wrightia 4: 76 (1968)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Green Horsemint, 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 13a, 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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