Cirsium rivulare 'Atropurpureum'
A Chelsea favourite - this lover of cool, damp soil produces a tight cluster of ruby-red thistles, neatly encased in criss-crossed black scales, on tall branching airy stems
Spectacular, deep crimson thistles appear on erect stems in July and August above spiny, dark green leaves. This handsome, towering thistle is a valuable addition to a summer garden and looks equally at home in a wildflower meadow, beside water or in groups among other perennials. Although it will tolerate dry conditions and partial shade, it does best in a moist, sunny border.