Globe thistle. Wooly stems with spherical dark blue flowers in midsummer and prickly divided green leaves. Looks wonderful in bold drifts and towards the back of mixed perennial borders. Any ..
Round, blue, globe flowers top 3-5ft stems in summer. Glaucous green foliage. Best in sandy well drained soil in full sun or part shade. Height 100cm, spread 60cm.
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Prickly deeply cut greyish green leaves with white globe flowers on maroon stems to 80cm tall from mid to late summer. Best in fertile, free draining soil in sun or part shade.
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