Hydrophylax maritima Plant Care

Hydrophylax maritima L.f.

Updated · Sources · How we source care data

Hydrophylax is a monotypic genus of flowering plants in the family Rubiaceae. It was described by Carl Linnaeus the Younger in 1782.

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Water

Every 5–7 days

Light

Bright indirect light

Temp

65–80°F

Humidity

50–70%

At a glance

How do you care for Hydrophylax maritima?

Plant Hydrophylax maritima in bright indirect light (USDA zones 13b) and water a young shrub every 5–7 days until it is established. It tolerates temperatures of 65–80°F (18–27°C). Fertilize it every 6 months during the growing season.

Where Is the Hydrophylax maritima Native To?

Native range3 countries

What Is the Hydrophylax maritima?

Hydrophylax maritima (Hydrophylax maritima) belongs to the Rubiaceae family within the Hydrophylax genus. Hydrophylax maritima is native to India, Sri Lanka and Thailand.

Hydrophylax maritima displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Hydrophylax maritima produces small white flowers in clusters.

Leaf size: approximately 3 inches.

How Often Should You Water a Hydrophylax maritima?

Water a young or newly planted Hydrophylax maritima every 5–7 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 5–7 days

Until established; then in dry spells

What Light Does the Hydrophylax maritima Need?

Hydrophylax maritima thrives in bright indirect light. Avoid placing Hydrophylax maritima in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Light Requirement

Bright indirect light

What Temperature and Humidity Does the Hydrophylax maritima Prefer?

Hydrophylax maritima tolerates temperatures of 65–80°F. Hydrophylax maritima prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Temperature

65–80°F

Humidity

50–70%

What Soil Mix Works Best for a Hydrophylax maritima?

Loose, well-draining soil mix with high organic content. Good drainage is essential for Hydrophylax maritima to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Hydrophylax maritima?

Feed Hydrophylax maritima 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 Hydrophylax maritima?

Choose a spot with bright indirect light and loose, well-draining soil mix with high organic content. Avoid low spots where water collects after rain.

Hydrophylax maritima is suited to USDA Zone 13b.

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 Hydrophylax maritima?

Hydrophylax maritima 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 Hydrophylax maritima?

Prune Hydrophylax maritima 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 Hydrophylax maritima in Winter?

Hydrophylax maritima 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 Hydrophylax maritima?

Hydrophylax maritima can be propagated through seeds, division of rhizomes.

Is the Hydrophylax maritima Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Hydrophylax maritima, 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 Hydrophylax maritima?

Hydrophylax maritima is susceptible to aphids, spider mites, scale insects. 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 Hydrophylax maritima Need?

Hydrophylax maritima grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Hydrophylax maritima is native to India, Sri Lanka and Thailand. In cooler regions, grow Hydrophylax maritima as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13b

Keep exploring plants

Hydrophylax maritima 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 Hydrophylax genus — compare its care with other Hydrophylax species on PlantoScan.

Hydrophylax is part of the Rubiaceae plant family — browse all Rubiaceae genera and species.

Hydrophylax maritima 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: Hydrophylax maritima L.f., family Rubiaceae (first published in Suppl. Pl. : 126 (1782)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Hydrophylax maritima, 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 13b, 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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