Photo: EpibaseCC BY 3.0via Wikimedia Commonsresized / cropped
Sweet Sultan Plant Care
Centaurea moschata L.
Updated · Sources · How we source care data
Amberboa moschata (common name sweetsultan) is a Southwest Asian species of plants in the family Asteraceae. It is native to Turkey, Iraq, Iran, and the Caucasus. It is also widely cultivated in many places as an ornamental, and is reportedly naturalized in parts of China and North America.
Every 7–14 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Sweet Sultan?
Water Sweet Sultan 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 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Sweet Sultan Native To?
What Is the Sweet Sultan?
Sweet Sultan (Centaurea moschata) belongs to the Asteraceae family within the Centaurea genus. Sweet Sultan is native to Armenia, Turkey, Iraq, Iran, and the Caucasus. Sweet Sultan is also known as Annual Sweet Sultan, Persian Cornflower, Centaurea moschata.
Sweet Sultan displays an upright, branching perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Sweet Sultan produces showy, thistle-like flower heads in various colors.
Leaf size: approximately 6 inches.
How Often Should You Water a Sweet Sultan?
Centaurea moschata 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 Sweet Sultan Need?
Sweet Sultan thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Sweet Sultan Prefer?
Centaurea moschata grows best at temperatures of 50–80°F. Sweet Sultan prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Sweet Sultan?
Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Sweet Sultan to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Sweet Sultan?
Feed Sweet Sultan 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 Sweet Sultan?
Repot every 2-3 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 Sweet Sultan?
Sweet Sultan can be propagated through seeds, division of clumps. Similar propagation techniques also apply to blue cornflower plant care, which shares the same genus.
Is the Sweet Sultan Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Sweet Sultan, 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 Sweet Sultan?
Sweet Sultan is susceptible to aphids, spider mites, powdery mildew. 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 Sweet Sultan Need?
Sweet Sultan grows outdoors in USDA Zone 3a – 9b. It survives winters down to planting zone 3a. Sweet Sultan is native to Armenia, Turkey, Iraq, Iran, and the Caucasus.
Hardiness Zone
Zone 3a – 9b
Keep exploring plants
Sweet Sultan 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 Centaurea genus — compare its care with other Centaurea species on PlantoScan.
Centaurea is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Sweet Sultan thrives in bright light and direct sun — see other bright-light plants.
More Centaurea Species
Other Centaurea species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Centaurea moschata L., family Asteraceae (first published in Sp. Pl. : 909 (1753)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Sweet Sultan, 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: Epibase, CC BY 3.0, Wikimedia Commons — original.
- Hardiness zone: USDA Zone 3a – 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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