
Image: AI generated
Mexican foxglove Plant Care
Tetranema floribundum Hammel & Grayum
Updated · Sources · How we source care data
This plant is easily identified by its bright purple flowers, which contrast beautifully against its dark green foliage. Originating from the tropical regions of Madagascar, Tetranema floribundum is highly sought after by plant collectors for its unique coloration and prolific blooming habit. Its striking appearance makes it a standout addition to any collection.
Every 7–10 days
Full sun to partial shade
60–75°F
40–60%
At a glance
How do you care for Mexican foxglove?
Plant Mexican foxglove in full sun to partial shade (USDA zones 13a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 60–75°F (16–24°C). Fertilize it every 6 months during the growing season.
What Is the Mexican foxglove?
Mexican foxglove (Tetranema floribundum) belongs to the Plantaginaceae family within the Tetranema genus. Mexican foxglove is native to South Africa, Lesotho.
Mexican foxglove displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Mexican foxglove produces small, tubular flowers in shades of pink, purple, or white.
Leaf size: approximately 2 inches.
How Often Should You Water a Mexican foxglove?
Water a young or newly planted Mexican foxglove every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.
Watering Frequency
Every 7–10 days
Until established; then in dry spells
What Light Does the Mexican foxglove Need?
Mexican foxglove thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Mexican foxglove Prefer?
Tetranema floribundum tolerates temperatures of 60–75°F. Mexican foxglove prefers humidity levels of 40–60%.
Temperature
60–75°F
Humidity
40–60%
What Soil Mix Works Best for a Mexican foxglove?
Well-draining sandy loam with added organic matter. Good drainage is essential for Mexican foxglove to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Mexican foxglove?
Feed Mexican foxglove every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.
Stop feeding by late summer so new growth can harden before winter.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
Where Should You Plant a Mexican foxglove?
Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter. Avoid low spots where water collects after rain.
Mexican foxglove is suited to USDA Zone 13a.
Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.
How Far Apart Should You Plant a Mexican foxglove?
Mexican foxglove can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.
Planning a row or hedge? Try the plant spacing calculator.
How Do You Prune a Mexican foxglove?
Prune Mexican foxglove while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.
If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.
How Do You Care for a Mexican foxglove in Winter?
Mexican foxglove is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.
How Do You Propagate a Mexican foxglove?
Mexican foxglove can be propagated through seeds, division of clumps. Similar propagation techniques also apply to tetranema evoluta plant care, which shares the same genus.
Is the Mexican foxglove Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Mexican foxglove, 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 Mexican foxglove?
Mexican foxglove is susceptible to aphids, spider mites, leafhoppers. 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 Mexican foxglove Need?
Mexican foxglove grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Mexican foxglove is native to South Africa, Lesotho. In cooler regions, grow Mexican foxglove as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Mexican foxglove 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 Tetranema genus — compare its care with other Tetranema species on PlantoScan.
Tetranema is part of the Plantaginaceae plant family — browse all Plantaginaceae genera and species.
Mexican foxglove thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Tetranema floribundum Hammel & Grayum, family Plantaginaceae (first published in Phytologia 79: 276 (1995 publ. 1996)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Mexican foxglove, 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.
- Photo: AI-generated illustration (labelled on the image).
- 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.
