Hispida Phyllostegia Plant Care

Phyllostegia hispida Hillebr.

Updated · Sources · How we source care data

Phyllostegia hispida, the hispid phyllostegia, is an endangered species of flowering plant in the mint family, Lamiaceae. It is found only in wet forests at elevations of 2,300–4,200 feet (700–1,280 m) on the island of Molokaʻi in Hawaiʻi.

🌿Shrubs🌱Herbs
Water

Every 7–10 days

Light

Partial shade to full sun

Temp

60–80°F

Humidity

50–70%

At a glance

How do you care for Hispida Phyllostegia?

Plant Hispida Phyllostegia in partial shade to full sun (USDA zones 13a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 60–80°F (16–27°C). Fertilize it every 6 months during the growing season.

What Is the Hispida Phyllostegia?

Hispida Phyllostegia (Phyllostegia hispida) belongs to the Lamiaceae family within the Phyllostegia genus.

Hispida Phyllostegia displays an upright, spreading shrub growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Hispida Phyllostegia produces tubular flowers in shades of purple, pink, or white.

Leaf size: approximately 4 inches.

How Often Should You Water a Hispida Phyllostegia?

Water a young or newly planted Hispida Phyllostegia 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 Hispida Phyllostegia Need?

Hispida Phyllostegia thrives in partial shade to full sun.

Light Requirement

Partial shade to full sun

What Temperature and Humidity Does the Hispida Phyllostegia Prefer?

Phyllostegia hispida tolerates temperatures of 60–80°F. Hispida Phyllostegia prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Temperature

60–80°F

Humidity

50–70%

What Soil Mix Works Best for a Hispida Phyllostegia?

Well-draining loamy soil with added organic matter for moisture retention. Good drainage is essential for Hispida Phyllostegia to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Hispida Phyllostegia?

Feed Hispida Phyllostegia 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 Hispida Phyllostegia?

Choose a spot with partial shade to full sun and well-draining loamy soil with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Hispida Phyllostegia 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 Hispida Phyllostegia?

Hispida Phyllostegia can spread to about 3 ft (0.9 m) and reach about 2 ft (1 m) tall. Space plants about 3 ft (0.9 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 Hispida Phyllostegia?

Prune Hispida Phyllostegia 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 Hispida Phyllostegia in Winter?

Hispida Phyllostegia 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 Hispida Phyllostegia?

Hispida Phyllostegia can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to short-toothed phyllostegia plant care, which shares the same genus.

Is the Hispida Phyllostegia Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Hispida Phyllostegia, 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 Hispida Phyllostegia?

Hispida Phyllostegia 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 Hispida Phyllostegia Need?

Hispida Phyllostegia grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Hispida Phyllostegia as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

Keep exploring plants

Hispida Phyllostegia 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 Phyllostegia genus — compare its care with other Phyllostegia species on PlantoScan.

Phyllostegia is part of the Lamiaceae plant family — browse all Lamiaceae genera and species.

Hispida Phyllostegia thrives in bright light and direct sun — see other bright-light plants.

More Phyllostegia Species

Other Phyllostegia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:

Sources

  • Scientific name & taxonomy: Phyllostegia hispida Hillebr., family Lamiaceae (first published in Fl. Hawaiian Isl. : 353 (1888)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Hispida Phyllostegia, 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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