Tuberous thistle (Cirsium tuberosum)

Tuberous thistle

The Knollige Kratzdistel is a perennial herbaceous plant that reaches stature heights between usually 40 and 1.5 m. The root fibers are fused into a spindle-shaped tuber. The wingless, spider web hairy stems grow upright, is one to three headed and very rarely also has a small leaf above the middle.

Scientific classification

Species

Tuberous thistle (Cirsium tuberosum)

Asters bellflowers fanflowers and allies

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Perennial

Lifespan

Herb

Plant Type

Summer

Bloom Time

1.5 m

Plant Height

Deciduous

Leaf type

0 - 35 ℃

Ideal Temperature

Images of Tuberous thistle

Distribution of Tuberous thistle

Distribution Map

Tuberous thistle is native to central and southern Europe, thriving predominantly in regions with temperate climates. The species has been introduced to other areas within the European continent. Furthermore, tuberous thistle is also cultivated, which supports its presence beyond its natural range, often in similar climatic conditions.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Damp grassland

Care Guide for Tuberous thistle

Every week

Water

Full sun

Sunlight

0 - 35 ℃

Ideal Temperature

Water: Originating from temperate regions, tuberous thistle thrives with consistent watering, requiring a balance between moisture and drainage. Weekly watering is ideal to maintain health. Typically grown outdoors, it benefits from natural rainfall patterns, reducing the need for additional irrigation.

Fertilize: For optimal growth of tuberous thistle, apply balanced nutrition fertilizers bi-monthly during active growth, ensuring equal NPK ratios. Avoid over-fertilization to protect root systems. Adjust feeding with seasonal changes, applying granules near the roots and watering thoroughly to enhance vigor.

Pruning: Tuberous thistle thrives with early spring pruning, which removes dead stems and spent flowers to promote healthy growth and shape. This practice helps prevent overcrowding, reducing disease risk while enhancing the plant’s appearance. Use clean, sharp tools for precise cuts to avoid infection.

Propagation: Tuberous thistle is best propagated through division by leveraging mature clumps. Each root tuber should retain a portion of the crown with growth buds. Careful handling during separation encourages successful establishment, aiding the spread of tuberous thistle in suitable habitats.

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