Photo: Tom NortonCC BY 4.0via iNaturalistresized / cropped
Turks Cap Lily Plant Care
Lilium superbum Thunb.
Updated · Sources · How we source care data
Lilium superbum is a species of true lily native to the eastern and central regions of North America. Common names include Turk's cap lily, turban lily, swamp lily, lily royal, or American tiger lily.
Every 4–7 days
Full sun to partial shade
50–75°F
40–70%
At a glance
How do you care for Turks Cap Lily?
Water Turks Cap Lily every 4–7 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 40–70% humidity. Fertilize it every 6 months during the growing season. The ASPCA lists it as toxic to cats (no verdict for dogs), so keep it out of reach of pets.
Where Is the Turks Cap Lily Native To?
What Is the Turks Cap Lily?
Turks Cap Lily (Lilium superbum) belongs to the Liliaceae family within the Lilium genus. Turks Cap Lily is native to the eastern and central regions of North America. Turks Cap Lily is also known as Turk's Cap Lily, American Turk's Cap Lily.
Turks Cap Lily displays an upright, tall perennial growth habit, reaching up to 4 ft tall with a spread of approximately 1 ft. Turks Cap Lily produces large, showy flowers in various colors like white, pink, orange, or red.
Leaf size: approximately 8 inches.
How Often Should You Water a Turks Cap Lily?
Lilium superbum requires watering every 4–7 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 4–7 days
Let soil partially dry between waterings
What Light Does the Turks Cap Lily Need?
Turks Cap Lily thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Turks Cap Lily Prefer?
Lilium superbum grows best at temperatures of 50–75°F. Turks Cap Lily prefers humidity levels of 40–70%.
Temperature
50–75°F
Humidity
40–70%
What Soil Mix Works Best for a Turks Cap Lily?
Well-draining, fertile soil with added organic matter like compost or peat moss. Good drainage is essential for Turks Cap Lily to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Turks Cap Lily?
Feed Turks Cap Lily 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 Turks Cap Lily?
Repot every 2-3 years in early spring after flowering. 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 Turks Cap Lily?
Turks Cap Lily can be propagated through division of bulbs, scales, or seeds. Similar propagation techniques also apply to tiger lily plant care, which shares the same genus.
Is the Turks Cap Lily Toxic to Pets and Children?
Toxic to cats (no verdict for dogs)
Source: ASPCA Animal Poison Control Center plant list. View the ASPCA entry
Toxic to cats, dogs, and horses; can cause vomiting, lethargy, kidney failure
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 Turks Cap Lily?
Turks Cap Lily is susceptible to aphids, red lily beetles, slugs. 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 Turks Cap Lily Need?
Turks Cap Lily grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Turks Cap Lily is native to the eastern and central regions of North America. In cooler regions, grow Turks Cap Lily as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Turks Cap Lily 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 Lilium genus — compare its care with other Lilium species on PlantoScan.
Lilium is part of the Liliaceae plant family — browse all Liliaceae genera and species.
Turks Cap Lily 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: Lilium superbum Thunb., family Liliaceae (first published in Fl. Jap. : 134 (1784)) — World Flora Online record, IPNI name record, Wikidata.
- Pet toxicity: The ASPCA lists Turks Cap Lily as toxic to cats (no verdict for dogs). Source: ASPCA Toxic and Non-Toxic Plant List.
- Photo: Tom Norton, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 12a, 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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