Photo: Saryu Mae 前 朝琉CC BY 4.0via iNaturalistresized / cropped
Sea Celery Plant Care
Apium prostratum Labill. ex Vent.
Updated · Sources · How we source care data
This creeping plant is characterized by its delicate, fern-like leaves that cascade gracefully over the edges of pots and hanging baskets. Originating from Australia, Apium prostratum, with its unique foliage, is a desirable addition to any plant collector's indoor garden, adding a touch of elegance and charm to any space.
Every 3–5 days
Full sun to part shade
60–75°F
40–60%
At a glance
How do you care for Sea Celery?
Water Sea Celery every 3–5 days, letting the top layer of soil dry out between waterings, and give it full sun to part shade. It prefers temperatures of 60–75°F (16–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Sea Celery Native To?
What Is the Sea Celery?
Sea Celery (Apium prostratum) belongs to the Apiaceae family within the Apium genus. Sea Celery is native to coastal Australia and New Zealand. Sea Celery is also known as Wild Celery, Native Celery.
Sea Celery displays an upright, clumping herb growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Sea Celery produces small white or yellow clustered flowers in umbels.
Leaf size: approximately 8 inches.
How Often Should You Water a Sea Celery?
Apium prostratum requires watering every 3–5 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 3–5 days
Let soil partially dry between waterings
What Light Does the Sea Celery Need?
Sea Celery thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Sea Celery Prefer?
Apium prostratum grows best at temperatures of 60–75°F. Sea Celery prefers humidity levels of 40–60%.
Temperature
60–75°F
Humidity
40–60%
What Soil Mix Works Best for a Sea Celery?
Rich, well-draining soil with plenty of organic matter. Good drainage is essential for Sea Celery to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Sea Celery?
Feed Sea Celery 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 Sea Celery?
Repot every 1-2 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 Sea Celery?
Sea Celery can be propagated through seeds, division. Similar propagation techniques also apply to celery plant care, which shares the same genus.
Is the Sea Celery Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Sea Celery, 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 Sea Celery?
Sea Celery is susceptible to aphids, caterpillars, leaf miners. 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 Sea Celery Need?
Sea Celery grows outdoors in USDA Zone 9a – 11b. It survives winters down to planting zone 9a. Sea Celery is native to coastal Australia and New Zealand. In cooler regions, grow Sea Celery as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 9a – 11b
Keep exploring plants
Sea Celery 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 Apium genus — compare its care with other Apium species on PlantoScan.
Apium is part of the Apiaceae plant family — browse all Apiaceae genera and species.
Sea Celery thrives in bright light and direct sun — see other bright-light plants.
More Apium Species
Other Apium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Apium prostratum Labill. ex Vent., family Apiaceae (first published in Jard. Malmaison : t. 81 (1804)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Sea Celery, 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: Saryu Mae 前 朝琉, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 9a – 11b, 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.
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