Navel Onion Plant Care
Allium umbilicatum Boiss.
Updated · Sources · How we source care data
This plant's long, arching leaves curl and twist in an eye-catching manner. Originating from the Mediterranean region, it boasts small white flowers that bloom in late spring, making it a prized addition to any collector's garden for its unique foliage and delicate blooms.
Every 7–14 days
Full sun to partial shade
50–75°F
40–60%
At a glance
How do you care for Navel Onion?
Water Navel Onion every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–75°F (10–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season. It is reported as toxic to pets, so keep it out of reach of pets.
Where Is the Navel Onion Native To?
What Is the Navel Onion?
Navel Onion (Allium umbilicatum) belongs to the Amaryllidaceae family within the Allium genus. Navel Onion is native to Pakistan, Afghanistan, Turkmenistan, Uzbekistan, Iran, and Tajikistan.
Navel Onion displays an upright, clumping perennial growth habit, reaching up to 2 ft tall with a spread of approximately 0.5 ft. Navel Onion produces spherical clusters of small purple, white, or pink flowers.
Leaf size: approximately 12 inches.
How Often Should You Water a Navel Onion?
Allium umbilicatum requires watering every 7–14 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 7–14 days
Let soil partially dry between waterings
What Light Does the Navel Onion Need?
Navel Onion thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Navel Onion Prefer?
Allium umbilicatum grows best at temperatures of 50–75°F. Navel Onion prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Navel Onion?
Well-draining sandy loam with added compost for nutrients. Good drainage is essential for Navel Onion to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Navel Onion?
Feed Navel Onion 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 Navel Onion?
Divide and repot every 3-4 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 Navel Onion?
Navel Onion can be propagated through division of bulbs, offsets, seeds. Similar propagation techniques also apply to onion plant care, which shares the same genus.
Is the Navel Onion Toxic to Pets and Children?
Toxic (caution)
Reported as toxic in our plant data. Not verified by the ASPCA.
Toxic to dogs, cats, and horses if ingested
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 Navel Onion?
Navel Onion is susceptible to onion thrips, onion maggots. 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 Navel Onion Need?
Navel Onion grows outdoors in USDA Zone 6a – 9b. It survives winters down to planting zone 6a. Navel Onion is native to Pakistan, Afghanistan, Turkmenistan, Uzbekistan, Iran, and Tajikistan.
Hardiness Zone
Zone 6a – 9b
Keep exploring plants
Navel Onion 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 Allium genus — compare its care with other Allium species on PlantoScan.
Allium is part of the Amaryllidaceae plant family — browse all Amaryllidaceae genera and species.
Navel Onion thrives in bright light and direct sun — see other bright-light plants.
More Allium Species
Other Allium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Allium umbilicatum Boiss., family Amaryllidaceae (first published in Diagn. Pl. Orient. , ser. 2, 4: 113 (1859)) — World Flora Online record, IPNI name record.
- Pet toxicity: Navel Onion is reported as toxic to pets in our plant data (not verified by the ASPCA), so treat it with caution. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 6a – 9b, 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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