Cotton Thistle (Onopordum Acanthium) is a biennial herb in the Asteraceae family with moderate care difficulty. It requires low watering and full sun light in USDA hardiness zones 5-9. This plant is safe for cats and dogs.
Onopordum acanthium is a biennial flowering plant in the family Asteraceae, native to Europe and Western Asia, known for its spiny leaves and large purple flower heads.
Cotton Thistle
Onopordum Acanthium
Onopordum acanthium is a biennial flowering plant in the family Asteraceae, native to Europe and Western Asia, known for its spiny leaves and large purple flower heads.
Quick Facts
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Growing Conditions
Care Calendar
Monthly care tasks for Cotton Thistle
Expert Care Tips
Pro tips from botanists and plant experts
Watering Tip
Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.
Humidity Trick
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Growth Hack
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