Star Bladderwort (Utricularia stellaris)

Photo: National Geographic Okavango Wilderness ProjectCC BY 4.0via iNaturalistresized / cropped

Star Bladderwort Plant Care

Utricularia stellaris L.f.

Updated · Sources · How we source care data

Utricularia stellaris is a carnivorous plant known for its stunning white flowers with yellow throats that resemble stars, hence its name. It is native to wetlands and bogs in Southeast Asia and is popular among plant enthusiasts for its unique appearance and interesting feeding mechanism.

Water

Every 2–4 days

Light

Bright indirect light

Temp

65–80°F

Humidity

60–80%

At a glance

How do you care for Star Bladderwort?

Water Star Bladderwort every 2–4 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 65–80°F (18–27°C) and 60–80% humidity. Fertilize it every month during the growing season.

Where Is the Star Bladderwort Native To?

Native range70 countries

What Is the Star Bladderwort?

Star Bladderwort (Utricularia stellaris) belongs to the Lentibulariaceae family within the Utricularia genus. Star Bladderwort is native to Africa, tropical Asia, and northern Australia.

Star Bladderwort displays a trailing or climbing vine growth habit, reaching up to tall with a spread of approximately . Star Bladderwort produces unique, small, colorful snapdragon-like flowers.

Leaf size: approximately 1 inches.

How Often Should You Water a Star Bladderwort?

Utricularia stellaris requires watering every 2–4 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 2–4 days

Let soil partially dry between waterings

What Light Does the Star Bladderwort Need?

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

Light Requirement

Bright indirect light

What Temperature and Humidity Does the Star Bladderwort Prefer?

Utricularia stellaris grows best at temperatures of 65–80°F. Star Bladderwort prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Temperature

65–80°F

Humidity

60–80%

What Soil Mix Works Best for a Star Bladderwort?

Sphagnum moss or peat moss with perlite for a well-aerated, acidic mix. Good drainage is essential for Star Bladderwort to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Star Bladderwort?

Feed Star Bladderwort every month 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 month

During the growing season

The PlantoScan app can remind you when to water and when to fertilize each plant.

How Do You Repot a Star Bladderwort?

Repot annually in spring to refresh soil and provide space for growth. 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 Star Bladderwort?

Star Bladderwort can be propagated through division, leaf or root cuttings, seeds. Similar propagation techniques also apply to alpine bladderwort plant care, which shares the same genus.

Is the Star Bladderwort Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Star Bladderwort, 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 Star Bladderwort?

Star Bladderwort is susceptible to aphids, spider mites, thrips. 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 Star Bladderwort Need?

Star Bladderwort grows outdoors in USDA Zone 10b – 12b. It survives winters down to planting zone 10b. Star Bladderwort is native to Africa, tropical Asia, and northern Australia. In cooler regions, grow Star Bladderwort as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 10b – 12b

Keep exploring plants

Star Bladderwort 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 Utricularia genus — compare its care with other Utricularia species on PlantoScan.

Utricularia is part of the Lentibulariaceae plant family — browse all Lentibulariaceae genera and species.

Star Bladderwort thrives in bright light and direct sun — see other bright-light plants.

More Utricularia Species

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

Sources

  • Scientific name & taxonomy: Utricularia stellaris L.f., family Lentibulariaceae (first published in Suppl. Pl. : 86 (1782)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Star Bladderwort, 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: National Geographic Okavango Wilderness Project, CC BY 4.0, iNaturalist — original.
  • Hardiness zone: USDA Zone 10b – 12b, estimated from the plant's typical growing conditions.
  • 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.

PlantoScan app icon

Identify Plants Like the
Star Bladderwort Instantly

Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.

Download on the App StoreGet it on Google Play

Free

to download

iOS & Android

platforms

Light & dark

mode

100,000+

species