Hardys Cottage Garden Plants
Onopordum acanthium
Onopordum acanthium
Available Spring 2027
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Plants are dispatched in growing condition and may not be in full flower. If too tall to pack safely, we may cut them back — this helps them establish more quickly. Read our Mail Order FAQs.
Commonly known as Cotton Thistle, this robust upright biennial is an imposingly beautiful architectural plant. Oblong spiny silvery-leaves appear on this thistle. Thistle-like rounded pink-purple flower heads during summer.
When planting in your borders ensure you choose a sunny situation with a well-drained soil.
Remember this plant is a biennial. Collect seed to sow in containers in either the autumn or spring, alternatively allow to self-seed in situ.
Height and Spread: 175cm x 60cm
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