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Onopordum illyricum - Illyrian Thistle, Illyrian Cottonthistle

Updated: Jul 7

Explore Onopordum illyricum (Illyrian Thistle) - its characteristics, habitat, cultivation, propagation, and functional uses and benefits.

Onopordum illyricum - Illyrian Thistle, Illyrian Cottonthistle

Onopordum illyricum | Botanical Characteristics

Common Names: Illyrian Thistle, Illyrian Cottonthistle

Family: Asteraceae

Appearance: A biennial thistle with spiny, silvery leaves and large, purple flower heads.

Type: Biennial

Evergreen / Deciduous: N/A

Layer: Herb

Root System: Features deep taproots

Height: Up to 2 meters

Width: Approximately 1 meter

Lifespan: Typically 2 years, completing its lifecycle in the second year

Growth Rate: Fast

Fertility: Self-fertile

Flowers: Hermaphroditic

Pollinator: Bees and other insects

Toxicity: Not known hazards

Onopordum illyricum | Habitat and Cultivation

Range

  • Native Range: Mediterranean region, including Southern Europe and North Africa

  • Companionship: Often found with other thistles and Mediterranean shrubs

  • Invasive Range: Can be invasive in certain regions

  • USDA Hardiness Zone: 5 - 9

  • Minimum Chill Hours Required: None specified

Resistance/Tolerance

  • Poor Soil: High tolerance

  • Drought: High tolerance

  • Shade: Low tolerance

  • Flood: Low tolerance

  • Wind: High tolerance

  • Maritime: Moderate tolerance

  • Air Pollution: Moderate tolerance

  • Fire: Moderate tolerance

Thriving Conditions

  • Sun Exposure: Full sun

  • Soil Moisture: Prefers dry to moderately moist conditions

  • Soil Type: Well-drained, sandy or rocky soils

  • Soil PH: Prefers slightly acidic to neutral (6.0 - 7.5)

Propagation

  • Seeds: Require light for germination, and stratification can improve germination rates

  • Cuttings: Not typically used

Onopordum illyricum | Functional Uses and Benefits

Edible: Young leaves can be cooked and eaten, though not commonly used as food

Medicinal: Historically used in folk medicine, but not widely recognized in modern medicine

Cosmetics: Not typically used in cosmetics

Animal Feed: Can be used as fodder for livestock, but spines must be removed

Fiber: Not used for fiber

Timber: Not used for timber

Firewood: Not typically used for firewood

Wind Break: Can serve as a windbreak due to its tall, sturdy growth

Fence: Can be used as a natural barrier plant due to its spiny nature

Cover Crop: Not used as a cover crop

Mulch: Not typically used as mulch

Nitrogen Fixer: No

Dynamic Accumulator: No significant data available

Pollinator Attractor: Yes, attracts bees and other pollinators

Pest Repellent: Not typically known as a pest repellent

Wildlife Supporter: Provides habitat for various insects and birds

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