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Alpine thistle with purple flower heads
Asteraceae11 May 202612 min

Carduus defloratus: complete guide

Carduus defloratus

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Overview

Carduus defloratus is an Alpine thistle. Originally from the Alps and Central European mountains.

Appearance

This thistle typically reaches 30-80 cm height. Purple flowers appear July-August in dense heads.

Ideal Location

Thrives in sunny positions. Aim for six to eight hours of direct sunlight daily.

Soil

Critical factor is well-draining calcareous soil. Add gravel, sand or small stones.

Watering

Once established, extremely drought-tolerant. Water only during extreme drought.

Pruning

Pruning unnecessary. After flowering, remove spent heads if desired.

Winter Hardiness

Extremely winter-hardy to -30 degrees Celsius.

Companion Plants

Integrates well with drought-tolerant alpine species. Ideal companions: Sedum, Sempervivum, Dianthus neglectus.

Conclusion

A unique, hardy alpine plant. Essential for alpine plant lovers.

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