Cirsium vulgare – Spear Thistle

0

Scientific Name

Cirsium vulgare (Savi) Ten.

Common Names

Spear Thistle, Bull Thistle, Common Thistle, Dodder

Synonyms

Cirsium vulgare subsp. vulgare, Cirsium vulgare var. vulgare, Cirsium vulgare f. vulgare, Ascalea lanceata, Ascalea lanceolata, Carduus divaricatus, Carduus firmus, Carduus lanceolatus, Carduus vulgaris, Chamaepeuce firma, Cirsium abyssinicum, Cirsium auriculatum, Cirsium balearicum, Cirsium britannicum, Cirsium dubium, Cirsium firmum, Cirsium fraternum, Cirsium lanceolatum var. vulgare, Cirsium lanigerum, Cirsium leucanicum, Cirsium linkii, Cirsium longespinosum, Cirsium microcephalum, Cirsium mielichhoferi, Cirsium misilmerense, Cirsium nemorale, Cirsium spurium, Cirsium strigosum, Cirsium vulgare, Cnicus firmus, Cnicus lanceolatus, Cnicus misilmerensis, Cnicus strigosus, Cynara lanceata, Eriolepis lanceolata, Lophiolepis dubia

Scientific Classification

Family: Asteraceae
Tribe: Cynareae
Genus: Cirsium

Flower

Color: Purple
Bloom Time: Mid summer to late summer

Description

Cirsium vulgare is a tall, biennial or short-lived monocarpic Thistle, forming a rosette of leaves and a taproot up to 28 inches (70 cm) long in the first year, and a flowering stem up to 5 feet (1.5 m) tall in the second (rarely third or fourth) year. The stem is winged, with numerous longitudinal, spine-tipped wings along its full length. The leaves are stoutly spined, grey-green and deeply lobed. The basal leaves is up to 10 inches (25 cm) long, with smaller leaves on the upper part of the flower stem. The leaf lobes are spear-shaped. The inflorescence is up to 2 inches (5 cm) in diameter, pink-purple, with all the florets of similar form. It is the national flower of Scotland.

Photo via plantsam.com

Hardiness

USDA hardiness zone 3a to 8b: from −40 °F (−40 °C) to 20 °F (−6.7 °C).

How to Grow and Care

The seeds of Cirsium can be sown in either autumn or after the last frost of spring. They should be sown at a depth of 0.12 inch (3 mm). If grown indoors first then Cirsium takes about 2 to 3 weeks to germinate at a temperature of 70 to 75 degrees Fahrenheit (21 to 24 degrees Celsius). The seedlings should be planted out in early spring, when it is still possible to get a frost with a spacing of about 2 feet (60 cm).

Cirisium thrives in full sun and poor, average or reach soil that is moist but well drained. Plants require little care, but deadheading limits their tendency to self-sow. they generally self-sow only in moderation and unlike weedy thistles, the seedlings are easy to pull up. Use Thistles in mixed beds, herb gardens or meadowlike plantings… – See more at: How to Grow and Care for Thistles (Cirsium)

Origin

Native throughout most of Europe, western Asia, and northwestern Africa. It is also naturalised in North America, Africa and Australia.

Links

Photo Gallery


Subscribe to Receive News and Updates from World of Flowering Plants: