Apium lineare Plant Care
Apium lineare Benth. & Hook.f.
Updated · Sources · How we source care data
Sium suave, the water parsnip or hemlock waterparsnip, is a perennial wildflower in the family Apiaceae. It is native to many areas of both Asia and North America.
Every 3–5 days
Full sun to part shade
60–75°F
40–60%
At a glance
How do you care for Apium lineare?
Water Apium lineare 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 Apium lineare Native To?
What Is the Apium lineare?
Apium lineare (Apium lineare) belongs to the Apiaceae family within the Apium genus. Apium lineare is native to many areas of both Asia and North America.
Apium lineare displays an upright, clumping herb growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Apium lineare produces small white or yellow clustered flowers in umbels.
Leaf size: approximately 8 inches.
How Often Should You Water a Apium lineare?
Apium lineare 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 Apium lineare Need?
Apium lineare thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Apium lineare Prefer?
Apium lineare grows best at temperatures of 60–75°F. Apium lineare prefers humidity levels of 40–60%.
Temperature
60–75°F
Humidity
40–60%
What Soil Mix Works Best for a Apium lineare?
Rich, well-draining soil with plenty of organic matter. Good drainage is essential for Apium lineare to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Apium lineare?
Feed Apium lineare 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 Apium lineare?
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 Apium lineare?
Apium lineare can be propagated through seeds, division. Similar propagation techniques also apply to celery plant care, which shares the same genus.
Is the Apium lineare Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Apium lineare, 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 Apium lineare?
Apium lineare 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 Apium lineare Need?
Apium lineare grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Apium lineare is native to many areas of both Asia and North America. In cooler regions, grow Apium lineare as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Apium lineare 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.
Apium lineare 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 lineare Benth. & Hook.f., family Apiaceae (first published in Gen. Pl. [Bentham & Hooker f.] 1(3): 888. 1867 [Sep 1867]) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Apium lineare, 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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