Iranian knapweed
Centaurea depressa, family Asteraceae
A drought-tolerant blue-flowered wildflower from southwestern and central Asia
Iranian knapweed (Centaurea depressa) is an annual wildflower native to southwestern and central Asia. It grows up to 60 cm tall, with gray, hairy stems and dark blue flowers that bloom in midsummer. The plant thrives in poor soils and dry conditions.
- Native to southwestern and central Asia
- Grows 20–60 cm tall with gray, hairy stems
- Dark blue flowers bloom in July and August
- Thrives in poor, dry soils
- Known as Iranian knapweed and low cornflower
What does Iranian knapweed look like?
Iranian knapweed is a small annual plant, usually reaching 20 to 60 cm in height. It grows several openly branched, grayish stems from its base, all covered with short hairs. The leaves are oblong, 5 to 10 cm long, and also have fine hairs. Its flower heads are made up of dark blue florets, giving it a striking appearance during its bloom in the summer.
Where does Iranian knapweed come from?
This species is native to southwestern and central Asia, including regions such as Iran. Its ability to survive in poor, dry soils has helped it persist in these areas. The plant is part of the Centaurea genus, which contains many wildflowers found across Eurasia. The common name 'Iranian knapweed' reflects its presence in Iran, while 'low cornflower' refers to its stature and resemblance to related species.
When and how Iranian knapweed blooms
Centaurea depressa blooms in July and August. It is adapted to grow in nutritionally poor soils and withstands drought, making it common in dry, open habitats. The plant completes its life cycle within a year, growing from seed each season. Its resilience allows it to thrive where other plants may struggle.
How Iranian knapweed is used
There are no specific traditional or modern uses recorded for Iranian knapweed in the available sources. It is primarily noted as a wildflower, valued for its ability to grow in harsh, dry conditions and its blue summer blooms.
Kinds of Iranian knapweed
No notable varieties or cultivars of Centaurea depressa are mentioned in the sources. The species is one of many in the Centaurea genus, which includes other wildflowers with similar forms and habitats.
What Iranian knapweed means
The sources do not mention any symbolic meaning, cultural associations, or emblematic status for Iranian knapweed. Its main significance lies in its adaptation to dry environments and its presence in the wild flora of southwestern and central Asia.
Questions people ask about Iranian knapweed
Where does Iranian knapweed come from?
Iranian knapweed is native to southwestern and central Asia, including Iran. It is adapted to dry, open habitats in these regions.
What does Iranian knapweed look like?
It is an annual plant, 20 to 60 cm tall, with gray, hairy stems and oblong, finely hairy leaves. Its flower heads are made up of dark blue florets.
When does Iranian knapweed flower?
The plant blooms in midsummer, specifically from July to August.
Is Iranian knapweed used for anything?
There are no specific uses recorded for Iranian knapweed in the available sources. It is mainly recognized as a wildflower.
What conditions does Iranian knapweed grow in?
It thrives in nutritionally poor soils and is drought tolerant, making it common in dry, open areas.
Good reading and sources
- USDA Plants DatabaseUS Department of Agriculture, Article
- Plants of the World OnlineRoyal Botanic Gardens, Kew, Plant database
- Where it has been recordedGBIF, Plant database
- Sightings and photos by naturalistsiNaturalist, Plant database
- Centaurea depressa on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Centaurea depressa", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). Phool rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes. It is not medical or foraging advice: many flowers are poisonous, and traditional uses are reported, not recommended. If something is wrong, tell us. Last refreshed 2026-10-03.
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