Syrian rue
Peganum harmala, family Nitrariaceae
In its own language: اسپند
A hardy desert herb with white flowers and psychoactive seeds
Syrian rue is a low-growing perennial herb with finely divided grey-green leaves, white flowers, and dark oily seeds. Native to arid zones from North Africa through the Middle East to China, it thrives in salty or disturbed soils and has been used for dye, incense, and traditional medicine.
- Seeds contain at least 5.9% beta-carboline alkaloids
- Roots can reach over 6 meters deep in dry soil
- Flowers produce nectar rich in proline, favored by insects
- Banned as a noxious weed in several U.S. states
- Linked by scholars to the ancient soma/haoma ritual drink
What does Syrian rue look like?
Syrian rue forms a low clump up to 80 cm tall, though usually around 30 cm. Its stems rise from a deep woody rootstock each spring. The leaves are greyish, finely split into narrow lobes. Solitary white flowers appear opposite the leaves, about 2–3 cm wide, with green veins and five petals. The whole plant smells strong and tastes bitter.
Where does Syrian rue come from?
This plant grows wild across a vast dry belt from Morocco through the Middle East to western China and Mongolia. It favors saline or disturbed ground, from sea level to high elevations. Though long present in Europe and Asia, it was introduced to places like Mexico and South Africa in modern times, often as a contaminant or for dye production.
When and how Syrian rue blooms
It blooms between March and October, depending on location, March–April in Israel, May–June in China, May–July in Morocco. Insects, especially honey bees, pollinate its flowers. Each flower yields a round capsule holding over 50 dark, triangular seeds. The roots can plunge over 6 meters deep in dry soil.
How Syrian rue is used
Its seeds have been burned as incense and used to make red dye. Traditional medicine employs it across its range, though it is toxic to livestock. Some link it to the ancient sacred drink soma or haoma. Today, several countries regulate its sale due to psychoactive alkaloids like harmine and harmalol.
Kinds of Syrian rue
Several botanical varieties exist, differing slightly in leaf shape or seed size across regions. Taxonomists have refined its classification since the 16th century, with lectotype designations helping clarify its identity among related forms in arid zones.
What Syrian rue means
Known as espand in Persian, it shares its name with the last month of the traditional calendar. Classical texts mention it under names like šabbārā in Aramaic. While valued ritually in some cultures, it is now listed as a noxious weed in parts of the United States and controlled in countries like France and Australia.
Questions people ask about Syrian rue
Where does Syrian rue come from?
It is native to arid regions from North Africa through the Middle East and Central Asia to northern China and Mongolia, growing in dry, often saline soils.
What is Syrian rue used for?
Traditionally, its seeds are used as incense, for red dye, and in folk medicine, though it is toxic to livestock and regulated in some countries due to psychoactive compounds.
Is Syrian rue related to common rue?
No. Despite the name, it is not related to true rue (Ruta); the resemblance is only superficial, which led to the shared common name.
When does it flower?
Flowering time varies by region: March–October in India, April–October in Pakistan, May–June in China, March–April in Israel, and May–July in Morocco.
Why is it called espand?
The Persian name اسپند (espand) comes from Middle Persian spand, meaning 'holy', and is also the name of the last month in the traditional Persian calendar.
Good reading and sources
- Plants of the World OnlineRoyal Botanic Gardens, Kew, Plant database
- Where it has been recordedGBIF, Plant database
- Sightings and photos by naturalistsiNaturalist, Plant database
- Peganum harmala on WikipediaEncyclopedia
- More photos on Wikimedia CommonsPhotos
- Wikidata recordOpen data
The facts on this page come from the Wikipedia article "Peganum harmala", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryPhool 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 2026-10-04.
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