Damask Rose

The genus name Rosa derives from the Latin adaptation of the Greek word 'ῥόδον' (rhodon), meaning 'red' or 'rose.' The specific epithet damascena is Latin for 'of Damascus,' referring to Damascus, the capital of Syria — a city historically renowned for its steel (Damask steel), fabrics (Damask), and roses. Beyond the common English name "Damask rose," it is also known as the Iranian Rose, Bulgarian Rose, Taif Rose, Ispahan Rose, Isparta Rose, Castile Rose, and Đulbešećerka (in Bosnia and Herzegovina and the Balkans). In Hawaiian, it is known as 'Lokelani' and serves as the official flower of the Island of Maui.

The binomial Rosa × damascena was published by the English botanist Philip Miller in the eighth edition of The Gardener's Dictionary (1768) as Rosa No. 15. However, as noted by PROSEA (Plant Resources of South-East Asia), the name R. damascena had already been used by Herrmann in 1762 for a different taxon (now included in R. centifolia), which, under strict nomenclatural rules, should invalidate Miller's name. Despite this technicality, the vast majority of academic literature and databases (GBIF, NCBI, USDA, EPPO) continue to recognize Rosa × damascena Mill. as the accepted name. The '×' symbol preceding the specific epithet indicates its hybrid origin and is increasingly standard in modern usage.

Given its complex cultivated origin, some taxonomists argue that Damask roses are more properly treated as a cultivar group (cv. group Damascena) rather than as a formal botanical species (PROSEA).

A cornerstone of the global perfume industry and one of humanity's oldest cultivated fragrant plants, the Damask rose is a triparental hybrid shrub whose essential oil contains over 300 chemical compounds and possesses extensive documented pharmacological activity.

The Damask rose is a naturally formed triparental hybrid. According to the DNA analysis by Iwata et al. (2000), a cross between Rosa moschata and Rosa gallica was subsequently pollinated by Rosa fedtschenkoana, producing the lineage that gave rise to Damask roses. This complex hybridization likely occurred in the foothills of Central Asia, where the natural ranges of all three parent species overlap. However, PROSEA notes that the influences of R. centifolia, R. gallica, and R. phoenicea seem most certain in Damask rose ancestry, with R. alba, R. canina, and R. moschata also mentioned as possible contributors — indicating that the precise parentage remains debated.

The genus Rosa is estimated to have originated approximately 33–23 million years ago during the Oligocene epoch in the Northern Hemisphere. The genus currently comprises over 200 wild species and more than 18,000 cultivars (Mahboubi, 2016). The Damask rose is tetraploid with a chromosome number of 2n = 28.

Damask roses are divided into several recognized subgroups.

Summer Damasks (R. × damascena nothovar. damascena) flower only once in summer and are the primary cultivars used in commercial rose oil production.

Autumn Damasks (nothovar. semperflorens) can produce two or three flushes of flowers during the growing season when pruned appropriately, and can even be forced to flower in winter months. Their presumed parentage is R. gallica × R. moschata.

Trigintipetala (Kazanlik rose) is the most widely cultivated cultivar for essential oil production worldwide, primarily grown in the Kazanlik area of Bulgaria and in Turkey. The name means "30 petals." It is treated as a synonym of Rosa × damascena and also classified as R. gallica var. damascena f. trigintipetala Dieck.

Versicolor (York and Lancaster rose) is a summer-flowering subgroup with variegated flowers.

Portlandica (Portland rose) is a low-growing subgroup with bright red, semi-double flowers in clusters of 3–4, flowering from midsummer into autumn.

Following Miller's original description (1768), Voss (1894) treated the Damask rose as R. gallica var. damascena, while Koehne (1893) described var. trigintipetala as a separate variety. The hybrid Rosa × centifolia (cabbage rose) is derived in part from R. × damascena, as are the Bourbon, Portland, and hybrid perpetual roses — making the Damask rose a foundational element in the pedigree of many modern rose groups.

The Damask rose is a robust, erect, multi-stemmed and branched deciduous shrub reaching 1–2.2 m in height at maturity. The stems and branches are densely armed with prickles of various sizes — straight to slightly curved, reddish-brown when young and grey when old — along with stiff bristles. The root system is well-developed and extensive. The cultivar 'Kazanlik' can reach 1.5–2.4 m (5–8 ft) tall and 1.2–1.8 m (4–6 ft) wide (NCSU Extension).

Leaves are alternate, compound-pinnate with 5–7 leaflets. The leaflets are elliptical, 2–7 cm × 1.5–5 cm, with serrate margins and usually hairy undersides (not glandular). The leaf surface has a waxy texture. Stipules are nearly entire and elongated; the petiole bears reddish-brown hairs.

The flowers are the most economically important organ of the Damask rose.

The inflorescence is a terminal raceme or thyrsus bearing 3–10 flowers (rarely more). Each flower is borne on a pedicel up to 7 cm long that is densely covered with glandular bristles. Individual flowers are up to approximately 8 cm in diameter and range from semi-double to double form. The petals are pinkish — preferably rosy-pink to rosy-red — and typically number 20–30 normal petals plus 5–10 deformed ones. Each flower contains 100–120 stamens and numerous pistils with free, hairy styles.

Flowering period is directly influenced by climatic conditions and is normally completed in 20–25 days. In Europe, peak flowering occurs in June–July; in India, in March–April and September–October. The optimal temperature for flowering is 15–20°C with a relative humidity of approximately 60%. Essential oil content reaches its maximum when the petals become cup-shaped and the stamens turn bright yellow.

After pollination, an ovoid rose hip (accessory fruit) develops, up to 2.5 cm long, fleshy and bristly, turning light to dark red when ripe. Each hip contains 1–3 seeds. The seeds are rounded-triangular, 3–5 mm long, and brownish. Most fruits are shed before fully ripening.

The Damask rose is adaptable to a wide range of environmental conditions. In general, it prefers a mild climate with no extremes of temperature, long periods of warm sunny weather, and evenly distributed rainfall. In the Kazanlik region of Bulgaria — the world's premier cultivation area — an average spring temperature of 5–15°C is considered optimal.

Night temperatures of 10–12°C during flowering inhibit oil synthesis, but night temperatures up to 20°C increase it. Hot, dry periods during flowering rapidly reduce oil yield through evaporation. While shade is detrimental to flowering in Bulgaria, it is essential in India where solar radiation is more intense. A winter dormancy period is required for bud development.

A deep, fertile loam (pH 6–7.5) is most suitable for commercial cultivation, although climate is more important than soil type. In India, alkaline saline soils of pH 8–9 are also well suited. Waterlogging should be avoided, though the Damask rose can withstand considerable waterlogging. Regular rainfall is critical, especially in spring and early summer, with a daily relative humidity in May–June of 70% considered optimal. Soil moisture should be maintained at 85% of field capacity.

The Damask rose bears hermaphrodite flowers and depends on insect pollination (entomophily), primarily by bees, butterflies, and other flower-visiting insects. Its intense fragrance plays a crucial role in attracting pollinators. Within each inflorescence, flowers bloom consecutively.

Damask roses suffer substantially from numerous diseases and pests, and control measures are essential. Major diseases include rose rust (Phragmidium spp.), black spot (Marssonina rosae), powdery mildew (Sphaerotheca spp., Uncinuma spp.), damping off (Pythium spp.), and root rot (Phytophthora spp.). Key pests include root mealybugs, root aphids, rootworms, nematodes, stem borers, scale insects, caterpillars, chafer beetles, midges, and thrips. Large differences in pathogen prevalence exist between regions and cultivars.

Commercial propagation relies almost exclusively on vegetative (asexual) methods to preserve desirable parental characteristics such as fragrance and oil content. Cuttings are taken from shoots beginning to lignify — preferably 20–30 cm long and 2-noded — treated with a rooting compound and inserted into nursery beds. After one year, rooted cuttings can be transplanted to the field. Division (splits) of mature plants, ensuring each split retains a root section, is also common; in Bulgaria, 1 hectare of mother plants can yield enough splits to plant 2 hectares. Grafting or budding onto rootstocks of other rose species (e.g., R. multiflora) is practiced as well.

Seed propagation is possible but commercially impractical due to low germination and establishment rates inherent to hybrid plants. However, pollen viability (approximately 45.63%) and germination rates (approximately 40.67%) are relatively adequate, making Damask rose a viable pollen source for cross-breeding programs.

A period of winter dormancy is essential for flower bud induction. In Europe, adventitious buds for flowering shoots form in spring on the crown of annual branches, with optimal bud formation at night/day temperatures of 3–4°C/15–16°C. In the first and sometimes second year after planting, all flower buds are removed to promote uniform branching. Flowering and harvesting begin in the third year. Flower yield typically increases during the first 5–7 years and then declines gradually. The economic life of a commercial plantation is approximately 10–12 years, though individual plants can survive for up to 50 years (PROSEA).

Flower harvesting for commercial rose oil production is intensive manual labor. Flowers must be picked between 5:00 and 10:00 a.m., when they have fully opened and oil content is at its peak. Whole, fully open flowers are selected — not buds or previous-day flowers — and nipped off just below the calyx. An experienced worker can pick 3–6 kg per hour. Harvested flowers should be transported to the distillery without delay, though storing bagged flowers in clean, cold (4–10°C) water can maintain oil content and quality for up to 3 days.

The Damask rose is known only from cultivation, and its exact origin remains uncertain. DNA evidence suggesting a triparental hybrid of R. gallica, R. moschata, and R. fedtschenkoana points to the foothills of Central Asia (where the ranges of all three species overlap) or Iran as the likely region of origin. PROSEA suggests it may have originated in the Anatolian region of Turkey. Semi-wild plants (cultivation escapes) are found in the Caucasus, Syria, and Morocco.

The most widely cited account of the Damask rose's introduction to Europe involves the French Crusader Robert de Brie, who reportedly brought it from Syria following the Siege of Damascus in 1148 during the Second Crusade. Alternative theories propose introduction by ancient Romans to their British colonies, or a gift to King Henry VIII circa 1540 — though this latter claim is doubtful since the cited physician Thomas Linacre died in 1524.

Bulgaria: The "Rose Valley" between Kazanlak and Karlovo is the world's most renowned cultivation area, with approximately 6,000 decares (600 ha) of rose fields producing roughly 70–75% of the world's rose oil. However, in 2025, climate change — a warm winter followed by a cold spring — caused frost damage to over 50% of plantations, reducing production to approximately 6,000 tonnes (the worst year in at least 30 years; BNR News, 2026).

Turkey: The Isparta region is the primary center, with commercial production beginning in 1888 and quality strictly regulated by a state cooperative.

Iran: Considered one of the probable regions of origin, Iran has extracted essential oils from Damask rose since the 7th century. It is also the national flower of Iran.

Other regions: Southern Russia, Morocco, India, France, Italy, China, Saudi Arabia (Taif), Afghanistan (Kabul region), and others.

Climate: Mild temperatures without extremes are preferred. Optimal flowering conditions are 15–20°C and 60–70% relative humidity. Hardy in USDA zones 4–9.

Soil: Deep, fertile loam (pH 6–7.5) is optimal, though alkaline soils up to pH 8–9 support growth in India.

Irrigation: Regular rainfall or irrigation is critical in spring and early summer. Only approximately 1% of rose fields in Bulgaria have irrigation systems, leaving the industry highly vulnerable to drought.

Elevation: Major cultivation areas range from approximately 300–400 m (Bulgaria's Rose Valley) to approximately 1,370 m above sea level (India), with foothills being particularly favorable.

Damask rose essential oil is a complex mixture of over 300 chemical constituents, many present in trace amounts but important for the oil's depth of fragrance. Based on Bulgarian rose oil (Kovats, 1987), the major components include citronellol (approximately 32%), alkanes and alkenes (approximately 19%), geraniol (approximately 15.7%), nerol (approximately 8.7%), linalool (approximately 2.7%), and 2-phenylethanol (approximately 1.2%).

Component ratios vary substantially by origin and cultivar. Citronellol ranges from 15.9–53.6%, geraniol from 8.3–32.2%, and nonadecane from 4.5–17.6% across reported studies (Seify et al., 2018). The citronellol-to-geraniol ratio (C/G ratio) is a key quality indicator, with a ratio of 1.0–1.5 considered ideal (Lebkiri et al., 2026).

Steam Distillation: The most traditional and widely used method. Fresh flowers are water-distilled in a two-stage process: the first stage yields "decant" (first oil) and a remaining liquid; the latter is redistilled to produce "second oil" and rose water. The decant and second oil are combined to make rose oil (rose otto). Distillation yield is 0.01–0.04%.

Solvent Extraction: Organic solvents (typically hexane) are used to extract rose concrete, which is then further processed with alcohol to yield rose absolute. Solvent extraction yields approximately 10 times more product (0.1–0.2% concrete), and concrete yields approximately 50% absolute. The absolute has a richer, more concentrated odor than the otto.

Supercritical CO₂ Extraction: A modern green chemistry technique that minimizes loss of heat-sensitive compounds.

Bulgarian rose oil is pale yellow to yellow-green when fresh (the greenish tint is due to azulenes, which gradually decompose). When cooled below 20°C, white or colorless crystals of stearoptene — odorless and constituting 15–25% of the oil — precipitate. The oil has an intense warm, deep floral, waxy odor, slightly spicy, very rich with traces of honey and a rosy-aldehydic dry-out lasting approximately 5 days (PROSEA).

Approximately 2,000–4,000 kg of flowers are required to produce 1 kg of rose oil (PROSEA). Average annual flower yield per hectare is 2–3 tonnes in Bulgaria, 2–2.5 tonnes in Turkey, 1.5–2 tonnes in Russia, and 1–1.5 tonnes in India. World production of rose oil and rose concrete was estimated at 15–20 tonnes in 1986 (PROSEA), with the global rose oil market having grown substantially since then — reaching an estimated several billion USD as of 2025.

Multiple pharmacological activities of the Damask rose have been scientifically confirmed (Boskabady et al., 2011; PMC3586833).

Antimicrobial: Petal extracts demonstrate inhibitory effects against bacteria and fungi. Tannin compounds form a protective layer on bacterial cells, inhibiting microbial growth.

Antioxidant: Phenolic compounds and flavonoids exhibit potent antioxidant effects.

Anti-inflammatory and Analgesic: Anti-inflammatory and pain-relieving effects have been confirmed in animal studies.

Antidiabetic: Positive effects on blood glucose regulation have been documented.

Antidepressant and Hypnotic: Fragrance inhalation and extract consumption have been shown to alleviate depression and promote sleep induction, with effects confirmed in clinical studies.

Tracheal Relaxant: Relaxation effects on tracheal smooth muscle have been observed, contributing to cough relief.

Anti-HIV: Some studies have reported inhibitory effects against HIV, though these remain at an early research stage.

The Damask rose has been used medicinally since antiquity throughout the Middle East, India, and the Mediterranean region — for digestive disorders, skin conditions, eye ailments, cardiac strengthening, emotional stabilization, and women's health. In Ayurvedic medicine, it is considered to pacify the Pitta dosha and improve digestion. Rose water is widely used for facial cleansing, beverages, cooking, and religious ceremonies. Preparations of flowers, fruits, and roots are traditionally regarded as astringent.

Pure Bulgarian rose otto commands prices of approximately USD 12,000–13,000 per kilogram as of 2025, making it one of the world's most expensive essential oils. The global rose oil market is valued at several billion USD (estimates vary by source), with projected annual growth rates of 5–10%. Rose oil has been classified as "generally recognized as safe" (GRAS No. 2988) in the United States.

Damask rose oil is a virtually indispensable ingredient in perfumery and cosmetics, used either as a primary scent or as a modifier. Rose oil does not perfectly reflect the true scent of living rose flowers, since certain aroma components — particularly phenylethyl alcohol — are partially lost during distillation. Its complexity, with over 300 constituents, makes it extremely difficult to replicate synthetically.

The Damask rose is edible and plays an important role in Middle Eastern and Indian cuisine. Rose water is used to flavor desserts (ice cream, Turkish delight, rice pudding, jam, yogurt), meat dishes, and beverages. Rose petals serve as an ingredient in herbal tea (zuhurat), spice blends (ras el hanout), and the sugar preserve gulkand. In India and Malaysia, petals are macerated in sesame oil to produce hair oil. Rose hip fruit can be processed into jam or syrup with high vitamin C content.

The Damask rose has symbolized beauty and love for millennia. It is the national flower of Iran and occupies a prominent place in Persian gardens and poetry. In Syria, it was inscribed on the UNESCO Intangible Cultural Heritage Lists in 2019. Bulgaria has over 300 years of rose oil production history, with an annual Rose Festival held in Kazanlak (late May to early June). In Hawaii, it serves as the official flower of Maui Island.

The Bengali writer Nirad Chaudhuri recorded that Hindus in East Bengal historically did not cultivate the Damask rose because it was "looked upon as an Islamic flower" (Chaudhuri, 1987).

Ancient Persians, Egyptians, Greeks, and Romans used the Damask rose extensively in perfumery, cosmetics, and medicine. Rose water distillation began in Iran in the 7th century and subsequently spread to the Indian subcontinent and Europe. The rose was a popular culinary ingredient from antiquity through the Renaissance in Europe, though its use in modern Western cooking has diminished. Traditional desserts such as marzipan and turrón still feature rose flavoring.

In Afghanistan's Kabul region, there is a historical tradition of rose perfume production. A UNDP-supported program currently encourages rose cultivation as an alternative crop to opium poppy production.

As a cultivated hybrid, the Damask rose has not been assessed by the IUCN Red List (NE, Not Evaluated). Because no wild populations exist, the primary conservation concern is the agricultural and industrial sustainability of cultivation rather than biodiversity conservation per se.

Climate Change: In 2025, Bulgaria experienced its worst year for rose production in at least 30 years. A warm winter followed by a cold spring caused frost damage to over 50% of plantations, with flower production plummeting to approximately 6,000 tonnes (compared to approximately 20,000 tonnes in 2018–2020). Only approximately 1% of rose fields have irrigation systems, making the sector extremely vulnerable to drought (BNR News, 2026).

Genetic Diversity Loss: Concentration of commercial production on a small number of cultivars (primarily 'Trigintipetala') raises concerns about narrowing genetic diversity.

Unfair Competition and Adulteration: Imports of cheaper rose oil from Azerbaijan and Turkey into Bulgaria, and suspected re-labeling as Bulgarian product, threaten the integrity of the Bulgarian rose oil brand. Export of Bulgarian seedlings to countries with lower production costs further compounds this issue. Rose oil adulteration with synthetic compounds or oils from other species is a longstanding industry problem.

Labor Shortages: Harvesting remains entirely manual, making the industry dependent on affordable labor, which is increasingly difficult to secure.

Confirmed: The Damask rose is a cultivated hybrid producing essential oil with over 300 chemical constituents. Citronellol and geraniol are the principal fragrance components. Bulgaria produces approximately 70–75% of the world's rose oil.

Probable: Triparental origin from R. gallica × R. moschata × R. fedtschenkoana is supported by DNA analysis, though the precise parental combination has some remaining disagreement. Central Asia or Iran is the most likely region of origin.

Hypothetical/Unresolved: The exact region of origin (Central Asia vs. Iran vs. Anatolia), the precise timing of initial cultivation (5,000 vs. 7,000 years ago), and the nomenclatural validity of the name (Herrmann 1762 vs. Miller 1768) remain subjects of ongoing debate.

A widespread misconception is that Bulgaria is the Damask rose's "homeland" — Bulgaria is the world's leading producer, but the rose's origin lies in Central Asia or the Middle East. Additionally, while aromatherapy with rose oil has scientifically documented antidepressant and calming effects, claims that rose oil can cure all ailments are exaggerated and not supported by evidence.