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I thought Echinops sphaerocephalus had white flowers. Surely this is E. ritro?
David J Trevan
... the blue globe thistle that occurs wild is Echinops bannaticus rather than Echinops ritro.
...but Rose only mentions this species and says it has pale blue florets.
Lat/Lng: 53.2723, -1.9209
OS grid ref: SK053750